Columbia subject headings:
Harvard subject headings:
Education--Aims and objectives--United States
Educational vouchers--United States.
Private schools--United States
Privatization--United States.
Public schools--United States
School choice--United States.
Princeton subject headings:
Education--Aims and objectives--United States.
Educational vouchers--United States.
Private schools--United States.
Privatization--United States.
Public schools--United States.
School choice--United States.