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        <link:definition>06161 - Schedule - Expense Example {Transposed}</link:definition>
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        <link:definition>06163 - Schedule - Average Annual Total Returns {Transposed}</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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        <link:definition>06167 - Schedule - Expense Example {Transposed}</link:definition>
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        <link:definition>06169 - Schedule - Average Annual Total Returns {Transposed}</link:definition>
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        <link:definition>06173 - Schedule - Expense Example {Transposed}</link:definition>
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        <link:definition>06175 - Schedule - Average Annual Total Returns {Transposed}</link:definition>
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        <link:definition>06179 - Schedule - Expense Example {Transposed}</link:definition>
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        <link:definition>06181 - Schedule - Average Annual Total Returns {Transposed}</link:definition>
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        <link:definition>06182 - Disclosure - Risk/Return Detail Data {Elements} (STET INSTITUTIONAL TAX FREE FUND - CLASS C)</link:definition>
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        <link:definition>06183 - Document - Risk/Return Summary {Unlabeled} (STET TAX FREE FUND)</link:definition>
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        <link:definition>06184 - Schedule - Annual Fund Operating Expenses</link:definition>
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        <link:definition>06185 - Schedule - Expense Example {Transposed}</link:definition>
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        <link:definition>06187 - Schedule - Average Annual Total Returns {Transposed}</link:definition>
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        <link:definition>06188 - Disclosure - Risk/Return Detail Data {Elements} (STET TAX FREE FUND)</link:definition>
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  <element name="SummaryS000006438-2Member" id="ck0000701817_SummaryS000006438-2Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryS000006438-3Member" id="ck0000701817_SummaryS000006438-3Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryS000006439Member" id="ck0000701817_SummaryS000006439Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryS000016947Member" id="ck0000701817_SummaryS000016947Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
</schema>
