That's by design. France has a cabinet with full control over education in the entire nation. In the United States, education is in the hands of locally elected school boards and the role of the federal and state secretaries of education seems to be mostly limited to dumping money on those people. (And attaching conditions to that money in general seems to be fairly controversial, as the present discussion shows.)

There's no way such a system can produce uniform results.

(The wisdom in forcing voters to elect all sorts of local commissions is another matter entirely. I struggle to see how anyone can make an informed choice, in ballots with 10 or more elected positions, but they seem normal in America.)