<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
   <NUMBER> 012
   <NAME> NUVEEN FLAGSHIP ARIZONA MUNICIPAL BOND FUND - CLASS B
<MULTIPLIER> 1000

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          MAY-31-2000
<PERIOD-START>                             JUN-01-1999
<PERIOD-END>                               MAY-31-2000
<INVESTMENTS-AT-COST>                            98320
<INVESTMENTS-AT-VALUE>                           97263
<RECEIVABLES>                                     1859
<ASSETS-OTHER>                                    1215
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  100337
<PAYABLE-FOR-SECURITIES>                          2361
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          418
<TOTAL-LIABILITIES>                               2779
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                         98801
<SHARES-COMMON-STOCK>                              360
<SHARES-COMMON-PRIOR>                              372
<ACCUMULATED-NII-CURRENT>                         (37)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          (149)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        (1057)
<NET-ASSETS>                                     97558
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                 6448
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                    1168
<NET-INVESTMENT-INCOME>                           5280
<REALIZED-GAINS-CURRENT>                         (148)
<APPREC-INCREASE-CURRENT>                       (9625)
<NET-CHANGE-FROM-OPS>                           (4493)
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          168
<DISTRIBUTIONS-OF-GAINS>                            28
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             75
<NUMBER-OF-SHARES-REDEEMED>                         93
<SHARES-REINVESTED>                                  6
<NET-CHANGE-IN-ASSETS>                         (21033)
<ACCUMULATED-NII-PRIOR>                              3
<ACCUMULATED-GAINS-PRIOR>                          717
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              595
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                   1215
<AVERAGE-NET-ASSETS>                              4031
<PER-SHARE-NAV-BEGIN>                            11.24
<PER-SHARE-NII>                                    .44
<PER-SHARE-GAIN-APPREC>                          (.94)
<PER-SHARE-DIVIDEND>                             (.44)
<PER-SHARE-DISTRIBUTIONS>                        (.07)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.23
<EXPENSE-RATIO>                                   1.81


</TABLE>