Just close down all public schools. If the government is going to pay for education, then give the parents vouchers to send them to the private school of their choice.
Well, I agree with the voucher part, but the closing down of public schools thing strikes me as going a bit too far. The presence of a robust voucher system would mean that topics like this would be irrelevant. If parents don’t want a hypothetical construct which has evil moral implications being taught to their kids, they can send them to another school. Case closed.
If the point was education instead of indoctrination, your suggestion would be a good one.
If the point was that parents should have authority to say what kind of education their kids get instead of the state dictating it, you’d have a good suggestion.
Well, you have a good suggestion, it’s just that the opposition is not dealing in good faith.