Columbia subject headings:
Drug abuse--United States--Prevention--Statistics.
Educational surveys--United States.
School discipline--United States--Statistics.
Harvard subject headings:
Drug abuse--United States--Prevention
Drug abuse--United States--Prevention--Statistics.
Educational surveys--United States.
School discipline--United States--Statistics.
School discipline--United States.
School principals--United States--Attitudes.
Princeton subject headings:
Drug abuse--United States--Prevention.
Educational surveys--United States.
School discipline--United States.
School principals--United States--Attitudes.