Since both Houses of Congress refused to insert the word "expressly" before "delegated", the courts (post-FDR) have since used that to expand the "interstate commerce" clause (Article I, Section 8, Clause 3) of the Constitution to include anything that may be even remotely associated with interstate commerce.
Certainly, education affects the ability of a state to effect interstate commerce .... so they say. Well, what doesn't? Ergo, the federal government poking their nose into everything under the cover of the notorious "interstate commerce clause". In 1995, the Supreme Court in the US v Lopez case finally put the brakes on the congressional abuse of the commerce clause. Maybe that will hold some hope for overturning some other rulings