<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>
