National Science Digital Library (NSDL) Audience Education Level vocabulary. 2011-12-01: changed the simple type to be educationLevelType 2007-08-10: There is an implied hierarchy. See below. 2007-08-10: When using a term from the vocabulary, repeat the field educationLevel to include the entire hierarchy. 2007-0810: This is an update to the education level vocabulary version 1.00.000 available at: http://ns.nsdl.org/schemas/ed_type/ed_type_v1.00.xsd 2007-08-10: Tim Cornwell and Katy Ginger created version 1.01.000. Terms Grades Pre-K to 12, Postsecondary, Graduate were deleted and terms Early Elementary, Upper Elementary, Grade 13, Grade 14, Grade 15, Grade 16, Technical Education (Lower Division), Technical Education (Upper Division), Graduate/Professional, Informal Education, Elementary School Programming, Middle School Programming, Middle School Programming, General Public, Youth Public, Vocational/Professional Development Education were added. 2004-10-01: Jon Phipps: version 1.00.000 created 2004:01-01: Education Level value list created by Diane Hillmann Allowable values for the element. This vocabulary has an implied hierarchy. See the numerical hierarchal outline after the list of terms.