WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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> 063
   <NAME> NUVEEN HIGH YIELD MUNI BOND FUND - CLASS C
<MULTIPLIER> 1000

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               APR-30-2000
<INVESTMENTS-AT-COST>                            14870
<INVESTMENTS-AT-VALUE>                           14697
<RECEIVABLES>                                      404
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 1
<TOTAL-ASSETS>                                   15102
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          402
<TOTAL-LIABILITIES>                                402
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                         14965
<SHARES-COMMON-STOCK>                               91
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                           43
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          (135)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         (173)
<NET-ASSETS>                                     14700
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                  517
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                      59
<NET-INVESTMENT-INCOME>                            458
<REALIZED-GAINS-CURRENT>                         (135)
<APPREC-INCREASE-CURRENT>                        (173)
<NET-CHANGE-FROM-OPS>                              150
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                           38
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             89
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  1
<NET-CHANGE-IN-ASSETS>                           14600
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               45
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    172
<AVERAGE-NET-ASSETS>                               794
<PER-SHARE-NAV-BEGIN>                            20.00
<PER-SHARE-NII>                                    .96
<PER-SHARE-GAIN-APPREC>                         (1.60)
<PER-SHARE-DIVIDEND>                             (.77)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              18.59
<EXPENSE-RATIO>                                   1.26


</TABLE>