List77

<xs:simpleType name="List77">
  <xs:annotation>
    <xs:documentation source="ONIX Code List 77">US and Canada (excluding Québec) school or college grade</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:string">
    <xs:enumeration value="P">
      <xs:annotation>
        <xs:documentation>Preschool</xs:documentation>
        <xs:documentation>Age typically 0-4 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="K">
      <xs:annotation>
        <xs:documentation>Kindergarten</xs:documentation>
        <xs:documentation>Age typically 5 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1">
      <xs:annotation>
        <xs:documentation>First Grade</xs:documentation>
        <xs:documentation>Age typically 6 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="2">
      <xs:annotation>
        <xs:documentation>Second Grade</xs:documentation>
        <xs:documentation>Age typically 7 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="3">
      <xs:annotation>
        <xs:documentation>Third Grade</xs:documentation>
        <xs:documentation>Age typically 8 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="4">
      <xs:annotation>
        <xs:documentation>Fourth Grade</xs:documentation>
        <xs:documentation>Age typically 9 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="5">
      <xs:annotation>
        <xs:documentation>Fifth Grade</xs:documentation>
        <xs:documentation>Age typically 10 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="6">
      <xs:annotation>
        <xs:documentation>Sixth Grade</xs:documentation>
        <xs:documentation>Age typically 11 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="7">
      <xs:annotation>
        <xs:documentation>Seventh Grade</xs:documentation>
        <xs:documentation>Age typically 12 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="8">
      <xs:annotation>
        <xs:documentation>Eighth Grade</xs:documentation>
        <xs:documentation>Age typically 13 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="9">
      <xs:annotation>
        <xs:documentation>Ninth Grade</xs:documentation>
        <xs:documentation>High School Freshman – age typically 14 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="10">
      <xs:annotation>
        <xs:documentation>Tenth Grade</xs:documentation>
        <xs:documentation>High School Sophomore – age typically 15 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="11">
      <xs:annotation>
        <xs:documentation>Eleventh Grade</xs:documentation>
        <xs:documentation>High School Junior – age typically 16 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="12">
      <xs:annotation>
        <xs:documentation>Twelfth Grade</xs:documentation>
        <xs:documentation>High School Senior – age typically 17 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="13">
      <xs:annotation>
        <xs:documentation>College Freshman</xs:documentation>
        <xs:documentation>Age typically 18 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="14">
      <xs:annotation>
        <xs:documentation>College Sophomore</xs:documentation>
        <xs:documentation>Age typically 19 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="15">
      <xs:annotation>
        <xs:documentation>College Junior</xs:documentation>
        <xs:documentation>Age typically 20 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="16">
      <xs:annotation>
        <xs:documentation>College Senior</xs:documentation>
        <xs:documentation>Age typically 21 years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="17">
      <xs:annotation>
        <xs:documentation>College Graduate Student</xs:documentation>
        <xs:documentation>Age typically 22+ years</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>