I propose that “public education” be publicly funded, and nothing beyond that - make it Constitutionally illegal for the government to control the education or to tie any strings to the funding.
Publicly funded, parent controlled.
Why?
make it Constitutionally illegal for the government to control the education or to tie any strings to the funding
You're joking, right? You think the people who find a Constitutional Right to partial-birth abortion and sodomy are going to let that influence them in any way?
so each parent writes their own curriculum? I think this is rather unfeasible.