Columbia subject headings:
Harvard subject headings:
Education, Elementary--United States--Longitudinal studies.
Eighth grade (Education)--Longitudinal studies.
Elementary school dropouts--United States--Longitudinal studies.
School children--United States--Social conditions--Longitudinal studies.
School failure--United States--Longitudinal studies.
Princeton subject headings:
Eighth grade (Education)--Longitudinal studies.
Elementary school dropouts--United States--Longitudinal studies.
School children--United States--Social conditions--Longitudinal studies.
School failure--United States--Longitudinal studies.