The standard response here is home schooling or get 'em out of the public schools. But for the vast majority of parents that's not an option. We shouldn't concede the biggest single tax item we pay for schools to the liberals.
If more people took their kids out of these schools, more people would refuse to pay for the inferior quality of many public schools, and something might actually get done about it.
Something effective - something other than more money thrown down the rathole.