<XBRL>
<?xml version="1.0" encoding="us-ascii"?>
<!--XBRL document created by RR Donnelley IM Processor 9.1.2.0 using Fujitsu Interstage XWand-->
<schema targetNamespace="http://www.sextantfunds.com/20140327" elementFormDefault="qualified" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:sit="http://www.sextantfunds.com/20140327" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric">
  <annotation>
    <appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="sit-20140327_pre.xml" xlink:title="Presentation Links, all" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="sit-20140327_cal.xml" xlink:title="Calculation Links, all" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="sit-20140327_def.xml" xlink:title="Definition Links, all" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="sit-20140327_lab.xml" xlink:title="Label Links, all" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentDocumentandEntityInformationElements" id="httpwwwsextantfundscomroleDocumentDocumentandEntityInformationElements">
        <link:definition>000000 - Document - Document and Entity Information {Elements}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnSummaryUnlabeledSEXTANTGROWTHFUND" id="httpwwwsextantfundscomroleDocumentRiskReturnSummaryUnlabeledSEXTANTGROWTHFUND">
        <link:definition>000011 - Document - Risk/Return Summary {Unlabeled} - SEXTANT GROWTH FUND</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleShareholderFeesSEXTANTGROWTHFUND" id="httpwwwsextantfundscomroleScheduleShareholderFeesSEXTANTGROWTHFUND">
        <link:definition>000012 - Schedule - Shareholder Fees {- SEXTANT GROWTH FUND}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualFundOperatingExpensesSEXTANTGROWTHFUND" id="httpwwwsextantfundscomroleScheduleAnnualFundOperatingExpensesSEXTANTGROWTHFUND">
        <link:definition>000013 - Schedule - Annual Fund Operating Expenses {- SEXTANT GROWTH FUND}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleTransposedSEXTANTGROWTHFUND" id="httpwwwsextantfundscomroleScheduleExpenseExampleTransposedSEXTANTGROWTHFUND">
        <link:definition>000014 - Schedule - Expense Example {Transposed} {- SEXTANT GROWTH FUND}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleNoRedemptionTransposedSEXTANTGROWTHFUND" id="httpwwwsextantfundscomroleScheduleExpenseExampleNoRedemptionTransposedSEXTANTGROWTHFUND">
        <link:definition>000015 - Schedule - Expense Example, No Redemption {Transposed} {- SEXTANT GROWTH FUND}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualTotalReturnsSEXTANTGROWTHFUNDBarChart" id="httpwwwsextantfundscomroleScheduleAnnualTotalReturnsSEXTANTGROWTHFUNDBarChart">
        <link:definition>000016 - Schedule - Annual Total Returns - SEXTANT GROWTH FUND [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAverageAnnualTotalReturnsTransposedSEXTANTGROWTHFUND" id="httpwwwsextantfundscomroleScheduleAverageAnnualTotalReturnsTransposedSEXTANTGROWTHFUND">
        <link:definition>000017 - Schedule - Average Annual Total Returns {Transposed} {- SEXTANT GROWTH FUND}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnDetailUnlabeledSEXTANTGROWTHFUND" id="httpwwwsextantfundscomroleDocumentRiskReturnDetailUnlabeledSEXTANTGROWTHFUND">
        <link:definition>000018 - Document - Risk/Return Detail {Unlabeled} - SEXTANT GROWTH FUND</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DisclosureRiskReturnDetailDataElementsSEXTANTGROWTHFUND" id="httpwwwsextantfundscomroleDisclosureRiskReturnDetailDataElementsSEXTANTGROWTHFUND">
        <link:definition>000019 - Disclosure - Risk/Return Detail Data {Elements} - SEXTANT GROWTH FUND</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnSummaryUnlabeledSextantInternationalFund" id="httpwwwsextantfundscomroleDocumentRiskReturnSummaryUnlabeledSextantInternationalFund">
        <link:definition>000021 - Document - Risk/Return Summary {Unlabeled} - Sextant International Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleShareholderFeesSextantInternationalFund" id="httpwwwsextantfundscomroleScheduleShareholderFeesSextantInternationalFund">
        <link:definition>000022 - Schedule - Shareholder Fees {- Sextant International Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualFundOperatingExpensesSextantInternationalFund" id="httpwwwsextantfundscomroleScheduleAnnualFundOperatingExpensesSextantInternationalFund">
        <link:definition>000023 - Schedule - Annual Fund Operating Expenses {- Sextant International Fund}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleTransposedSextantInternationalFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleTransposedSextantInternationalFund">
        <link:definition>000024 - Schedule - Expense Example {Transposed} {- Sextant International Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleNoRedemptionTransposedSextantInternationalFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleNoRedemptionTransposedSextantInternationalFund">
        <link:definition>000025 - Schedule - Expense Example, No Redemption {Transposed} {- Sextant International Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualTotalReturnsSextantInternationalFundBarChart" id="httpwwwsextantfundscomroleScheduleAnnualTotalReturnsSextantInternationalFundBarChart">
        <link:definition>000026 - Schedule - Annual Total Returns - Sextant International Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAverageAnnualTotalReturnsTransposedSextantInternationalFund" id="httpwwwsextantfundscomroleScheduleAverageAnnualTotalReturnsTransposedSextantInternationalFund">
        <link:definition>000027 - Schedule - Average Annual Total Returns {Transposed} {- Sextant International Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnDetailUnlabeledSextantInternationalFund" id="httpwwwsextantfundscomroleDocumentRiskReturnDetailUnlabeledSextantInternationalFund">
        <link:definition>000028 - Document - Risk/Return Detail {Unlabeled} - Sextant International Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DisclosureRiskReturnDetailDataElementsSextantInternationalFund" id="httpwwwsextantfundscomroleDisclosureRiskReturnDetailDataElementsSextantInternationalFund">
        <link:definition>000029 - Disclosure - Risk/Return Detail Data {Elements} - Sextant International Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnSummaryUnlabeledSextantCoreFund" id="httpwwwsextantfundscomroleDocumentRiskReturnSummaryUnlabeledSextantCoreFund">
        <link:definition>000031 - Document - Risk/Return Summary {Unlabeled} - Sextant Core Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleShareholderFeesSextantCoreFund" id="httpwwwsextantfundscomroleScheduleShareholderFeesSextantCoreFund">
        <link:definition>000032 - Schedule - Shareholder Fees {- Sextant Core Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualFundOperatingExpensesSextantCoreFund" id="httpwwwsextantfundscomroleScheduleAnnualFundOperatingExpensesSextantCoreFund">
        <link:definition>000033 - Schedule - Annual Fund Operating Expenses {- Sextant Core Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleTransposedSextantCoreFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleTransposedSextantCoreFund">
        <link:definition>000034 - Schedule - Expense Example {Transposed} {- Sextant Core Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleNoRedemptionTransposedSextantCoreFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleNoRedemptionTransposedSextantCoreFund">
        <link:definition>000035 - Schedule - Expense Example, No Redemption {Transposed} {- Sextant Core Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualTotalReturnsSextantCoreFundBarChart" id="httpwwwsextantfundscomroleScheduleAnnualTotalReturnsSextantCoreFundBarChart">
        <link:definition>000036 - Schedule - Annual Total Returns - Sextant Core Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAverageAnnualTotalReturnsTransposedSextantCoreFund" id="httpwwwsextantfundscomroleScheduleAverageAnnualTotalReturnsTransposedSextantCoreFund">
        <link:definition>000037 - Schedule - Average Annual Total Returns {Transposed} {- Sextant Core Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnDetailUnlabeledSextantCoreFund" id="httpwwwsextantfundscomroleDocumentRiskReturnDetailUnlabeledSextantCoreFund">
        <link:definition>000038 - Document - Risk/Return Detail {Unlabeled} - Sextant Core Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DisclosureRiskReturnDetailDataElementsSextantCoreFund" id="httpwwwsextantfundscomroleDisclosureRiskReturnDetailDataElementsSextantCoreFund">
        <link:definition>000039 - Disclosure - Risk/Return Detail Data {Elements} - Sextant Core Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnSummaryUnlabeledSextantShort-TermBondFund" id="httpwwwsextantfundscomroleDocumentRiskReturnSummaryUnlabeledSextantShortTermBondFund">
        <link:definition>000041 - Document - Risk/Return Summary {Unlabeled} - Sextant Short-Term Bond Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleShareholderFeesSextantShort-TermBondFund" id="httpwwwsextantfundscomroleScheduleShareholderFeesSextantShortTermBondFund">
        <link:definition>000042 - Schedule - Shareholder Fees {- Sextant Short-Term Bond Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualFundOperatingExpensesSextantShort-TermBondFund" id="httpwwwsextantfundscomroleScheduleAnnualFundOperatingExpensesSextantShortTermBondFund">
        <link:definition>000043 - Schedule - Annual Fund Operating Expenses {- Sextant Short-Term Bond Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleTransposedSextantShort-TermBondFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleTransposedSextantShortTermBondFund">
        <link:definition>000044 - Schedule - Expense Example {Transposed} {- Sextant Short-Term Bond Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleNoRedemptionTransposedSextantShort-TermBondFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleNoRedemptionTransposedSextantShortTermBondFund">
        <link:definition>000045 - Schedule - Expense Example, No Redemption {Transposed} {- Sextant Short-Term Bond Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualTotalReturnsSextantShort-TermBondFundBarChart" id="httpwwwsextantfundscomroleScheduleAnnualTotalReturnsSextantShortTermBondFundBarChart">
        <link:definition>000046 - Schedule - Annual Total Returns - Sextant Short-Term Bond Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAverageAnnualTotalReturnsTransposedSextantShort-TermBondFund" id="httpwwwsextantfundscomroleScheduleAverageAnnualTotalReturnsTransposedSextantShortTermBondFund">
        <link:definition>000047 - Schedule - Average Annual Total Returns {Transposed} {- Sextant Short-Term Bond Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnDetailUnlabeledSextantShort-TermBondFund" id="httpwwwsextantfundscomroleDocumentRiskReturnDetailUnlabeledSextantShortTermBondFund">
        <link:definition>000048 - Document - Risk/Return Detail {Unlabeled} - Sextant Short-Term Bond Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DisclosureRiskReturnDetailDataElementsSextantShort-TermBondFund" id="httpwwwsextantfundscomroleDisclosureRiskReturnDetailDataElementsSextantShortTermBondFund">
        <link:definition>000049 - Disclosure - Risk/Return Detail Data {Elements} - Sextant Short-Term Bond Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnSummaryUnlabeledSextantBondIncomeFund" id="httpwwwsextantfundscomroleDocumentRiskReturnSummaryUnlabeledSextantBondIncomeFund">
        <link:definition>000051 - Document - Risk/Return Summary {Unlabeled} - Sextant Bond Income Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleShareholderFeesSextantBondIncomeFund" id="httpwwwsextantfundscomroleScheduleShareholderFeesSextantBondIncomeFund">
        <link:definition>000052 - Schedule - Shareholder Fees {- Sextant Bond Income Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualFundOperatingExpensesSextantBondIncomeFund" id="httpwwwsextantfundscomroleScheduleAnnualFundOperatingExpensesSextantBondIncomeFund">
        <link:definition>000053 - Schedule - Annual Fund Operating Expenses {- Sextant Bond Income Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleTransposedSextantBondIncomeFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleTransposedSextantBondIncomeFund">
        <link:definition>000054 - Schedule - Expense Example {Transposed} {- Sextant Bond Income Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleNoRedemptionTransposedSextantBondIncomeFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleNoRedemptionTransposedSextantBondIncomeFund">
        <link:definition>000055 - Schedule - Expense Example, No Redemption {Transposed} {- Sextant Bond Income Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualTotalReturnsSextantBondIncomeFundBarChart" id="httpwwwsextantfundscomroleScheduleAnnualTotalReturnsSextantBondIncomeFundBarChart">
        <link:definition>000056 - Schedule - Annual Total Returns - Sextant Bond Income Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAverageAnnualTotalReturnsTransposedSextantBondIncomeFund" id="httpwwwsextantfundscomroleScheduleAverageAnnualTotalReturnsTransposedSextantBondIncomeFund">
        <link:definition>000057 - Schedule - Average Annual Total Returns {Transposed} {- Sextant Bond Income Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnDetailUnlabeledSextantBondIncomeFund" id="httpwwwsextantfundscomroleDocumentRiskReturnDetailUnlabeledSextantBondIncomeFund">
        <link:definition>000058 - Document - Risk/Return Detail {Unlabeled} - Sextant Bond Income Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DisclosureRiskReturnDetailDataElementsSextantBondIncomeFund" id="httpwwwsextantfundscomroleDisclosureRiskReturnDetailDataElementsSextantBondIncomeFund">
        <link:definition>000059 - Disclosure - Risk/Return Detail Data {Elements} - Sextant Bond Income Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnSummaryUnlabeledSextantGlobalHighIncomeFund" id="httpwwwsextantfundscomroleDocumentRiskReturnSummaryUnlabeledSextantGlobalHighIncomeFund">
        <link:definition>000061 - Document - Risk/Return Summary {Unlabeled} - Sextant Global High Income Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleShareholderFeesSextantGlobalHighIncomeFund" id="httpwwwsextantfundscomroleScheduleShareholderFeesSextantGlobalHighIncomeFund">
        <link:definition>000062 - Schedule - Shareholder Fees {- Sextant Global High Income Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualFundOperatingExpensesSextantGlobalHighIncomeFund" id="httpwwwsextantfundscomroleScheduleAnnualFundOperatingExpensesSextantGlobalHighIncomeFund">
        <link:definition>000063 - Schedule - Annual Fund Operating Expenses {- Sextant Global High Income Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleTransposedSextantGlobalHighIncomeFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleTransposedSextantGlobalHighIncomeFund">
        <link:definition>000064 - Schedule - Expense Example {Transposed} {- Sextant Global High Income Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleNoRedemptionTransposedSextantGlobalHighIncomeFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleNoRedemptionTransposedSextantGlobalHighIncomeFund">
        <link:definition>000065 - Schedule - Expense Example, No Redemption {Transposed} {- Sextant Global High Income Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualTotalReturnsSextantGlobalHighIncomeFundBarChart" id="httpwwwsextantfundscomroleScheduleAnnualTotalReturnsSextantGlobalHighIncomeFundBarChart">
        <link:definition>000066 - Schedule - Annual Total Returns - Sextant Global High Income Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAverageAnnualTotalReturnsTransposedSextantGlobalHighIncomeFund" id="httpwwwsextantfundscomroleScheduleAverageAnnualTotalReturnsTransposedSextantGlobalHighIncomeFund">
        <link:definition>000067 - Schedule - Average Annual Total Returns {Transposed} {- Sextant Global High Income Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnDetailUnlabeledSextantGlobalHighIncomeFund" id="httpwwwsextantfundscomroleDocumentRiskReturnDetailUnlabeledSextantGlobalHighIncomeFund">
        <link:definition>000068 - Document - Risk/Return Detail {Unlabeled} - Sextant Global High Income Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DisclosureRiskReturnDetailDataElementsSextantGlobalHighIncomeFund" id="httpwwwsextantfundscomroleDisclosureRiskReturnDetailDataElementsSextantGlobalHighIncomeFund">
        <link:definition>000069 - Disclosure - Risk/Return Detail Data {Elements} - Sextant Global High Income Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnSummaryUnlabeledIdahoTax-ExemptFund" id="httpwwwsextantfundscomroleDocumentRiskReturnSummaryUnlabeledIdahoTaxExemptFund">
        <link:definition>000071 - Document - Risk/Return Summary {Unlabeled} - Idaho Tax-Exempt Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleShareholderFeesIdahoTax-ExemptFund" id="httpwwwsextantfundscomroleScheduleShareholderFeesIdahoTaxExemptFund">
        <link:definition>000072 - Schedule - Shareholder Fees {- Idaho Tax-Exempt Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualFundOperatingExpensesIdahoTax-ExemptFund" id="httpwwwsextantfundscomroleScheduleAnnualFundOperatingExpensesIdahoTaxExemptFund">
        <link:definition>000073 - Schedule - Annual Fund Operating Expenses {- Idaho Tax-Exempt Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleTransposedIdahoTax-ExemptFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleTransposedIdahoTaxExemptFund">
        <link:definition>000074 - Schedule - Expense Example {Transposed} {- Idaho Tax-Exempt Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleExpenseExampleNoRedemptionTransposedIdahoTax-ExemptFund" id="httpwwwsextantfundscomroleScheduleExpenseExampleNoRedemptionTransposedIdahoTaxExemptFund">
        <link:definition>000075 - Schedule - Expense Example, No Redemption {Transposed} {- Idaho Tax-Exempt Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAnnualTotalReturnsIdahoTax-ExemptFundBarChart" id="httpwwwsextantfundscomroleScheduleAnnualTotalReturnsIdahoTaxExemptFundBarChart">
        <link:definition>000076 - Schedule - Annual Total Returns - Idaho Tax-Exempt Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/ScheduleAverageAnnualTotalReturnsTransposedIdahoTax-ExemptFund" id="httpwwwsextantfundscomroleScheduleAverageAnnualTotalReturnsTransposedIdahoTaxExemptFund">
        <link:definition>000077 - Schedule - Average Annual Total Returns {Transposed} {- Idaho Tax-Exempt Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DocumentRiskReturnDetailUnlabeledIdahoTax-ExemptFund" id="httpwwwsextantfundscomroleDocumentRiskReturnDetailUnlabeledIdahoTaxExemptFund">
        <link:definition>000078 - Document - Risk/Return Detail {Unlabeled} - Idaho Tax-Exempt Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.sextantfunds.com/role/DisclosureRiskReturnDetailDataElementsIdahoTax-ExemptFund" id="httpwwwsextantfundscomroleDisclosureRiskReturnDetailDataElementsIdahoTaxExemptFund">
        <link:definition>000079 - Disclosure - Risk/Return Detail Data {Elements} - Idaho Tax-Exempt Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <import namespace="http://xbrl.sec.gov/rr/2012-01-31" schemaLocation="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd" />
  <import namespace="http://xbrl.sec.gov/dei/2012-01-31" schemaLocation="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <element name="S000004771Member" id="sit_S000004771Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000012978Member" id="sit_C000012978Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000012977Member" id="sit_C000012977Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000049087Member" id="sit_C000049087Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000012974Member" id="sit_C000012974Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000012975Member" id="sit_C000012975Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000012976Member" id="sit_C000012976Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="SAndPFiveHundredIndexMember" id="sit_SAndPFiveHundredIndexMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="S000022509Member" id="sit_S000022509Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000065110Member" id="sit_C000065110Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="NyseArcaInternationalMarketIndexMember" id="sit_NyseArcaInternationalMarketIndexMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="MsciEafeIndexMember" id="sit_MsciEafeIndexMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="S000022510Member" id="sit_S000022510Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000065111Member" id="sit_C000065111Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="DowJonesModeratePortfolioIndexMember" id="sit_DowJonesModeratePortfolioIndexMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="S000022511Member" id="sit_S000022511Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000065112Member" id="sit_C000065112Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="CitigroupGovernmentCorporateOneThreeIndexMember" id="sit_CitigroupGovernmentCorporateOneThreeIndexMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="S000022512Member" id="sit_S000022512Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000065113Member" id="sit_C000065113Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="CitigroupBroadInvestmentGradeIndexMember" id="sit_CitigroupBroadInvestmentGradeIndexMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="S000036646Member" id="sit_S000036646Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000112018Member" id="sit_C000112018Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="SAndPGlobalThousandTwoHundredIndexMember" id="sit_SAndPGlobalThousandTwoHundredIndexMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="S000022513Member" id="sit_S000022513Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000065114Member" id="sit_C000065114Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="SAndPIdahoMunicipalIndexMember" id="sit_SAndPIdahoMunicipalIndexMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
</schema>
</XBRL>