Columbia subject headings:
Drug abuse--United States--Prevention--Research.
School vandalism--United States--Longitudinal studies.
School violence--United States--Prevention--Research.
Harvard subject headings:
Drug abuse--Prevention--Research--United States.
School violence--Prevention--Research--United States.
Princeton subject headings:
Drug abuse--Prevention--Research--United States.
School vandalism--United States--Longitudinal studies.
School violence--Prevention--Research--United States.