Columbia subject headings:
Dropouts--United States--Longitudinal studies.
Educational surveys--United States.
High school dropouts--United States--Longitudinal studies.
Harvard subject headings:
Education--Demographic aspects--United States--Longitudinal studies--Statistics.
Education--Demographic aspects--United States--Statistics--Longitudinal studies.
Educational surveys--United States.
High school dropouts--United States--Longitudinal studies--Statistics.
High school dropouts--United States--Statistics--Longitudinal studies.
Princeton subject headings: