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        <CashGrantAmt>94500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
    </IRS990ScheduleI>
    <IRS990ScheduleO documentId="IRS990ScheduleO-01" softwareId="23017509">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>CALVERT TRUST IS A NONPROFIT ASSOCIATION WITH MEMBERS WHO PARTICIPATE IN THE ORGANIZATIONS GOVERNMENT</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>THE DECISIONS MADE BY THE MEMBERS FOLLOW ROBERTS RULE OF ORDER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>THE TREASURER IS SOLELY RESPONSIBLE FOR REVIEWING THE TAX RETURN.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>ORGANIZATION PROVIDES COPIES OF THE 990 UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt XI</FormAndLineReferenceDesc>
        <ExplanationTxt>W.L CALVERT MEMORIAL SCHOLARSHIP FUND INHERITED MR. WILLIAM CALVERTS ESTATE UPON HIS DEATH ON JUNE 4, 2018.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>PENNY PATTERSON 3251 CHEVY CHASE DR HOUSTON TX 77019</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>JEFFREY LUND 5127 TANGLE LN HOUSTON TX 77056</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>MRS. JUDY SCHULENBERG 17810 FOREST PARK LN SPRING TX 77379</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>DR. RICHARD BISHOP 13622 KINGSRIDE HOUSTON TX 77079</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>NICOLE VILLAREAL 3319 BROOKTREE LANE SPRING TX 77380</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>