High schools are made up of（）different types of schools with somewhat different tasks.

A.the hiring of teachers and staff
B.the designing of a suitable curriculum
C.the compiling and approving of budget
D.All of the above

A.the federal government
B.the state and board of trustees in some states
C.local school district
D.board of trustees

A.the federal government　
B.female only institutions
C.single sex institutions　
D.coeducation institutions