20 USC 3403:
(a) Rights of local governments and educational institutions . It is the intention of the Congress in the establishment of the Department to protect the rights of State and local governments and public and private educational institutions in the areas of educational policies and administration of programs and to strengthen and improve the control of such governments and institutions over their own educational programs and policies. The establishment of the Department of Education shall not increase the authority of the Federal Government over education or diminish the responsibility for education which is reserved to the States and the local school systems and other instrumentalities of the States.
(b) Curriculum, administration, and personnel; library resources. No provision of a program administered by the Secretary or by any other officer of the Department shall be construed to authorize the Secretary or any such officer to exercise any direction, supervision, or control over the curriculum, program of instruction, administration, or personnel of any educational institution, school, or school system, over any accrediting agency or association, or over the selection or content of library resources, textbooks, or other instructional materials by any educational institution or school system, except to the extent authorized by law.