Columbia subject headings:
Educational change--United States.
National Assessment of Vocational Education (U.S.)
Vocational education--United States.
Harvard subject headings:
Educational change--United States
National Assessment of Vocational Education (U.S.)
Vocational education--United States.
Princeton subject headings:
Educational change--United States.
National Assessment of Vocational Education (U.S.)
Vocational education--United States.