But there are benefits of education that just won't be incentivized at all in a market model, especially in whatever option the market makes available for people with lower incomes. Remember that the existing system was designed by big business in the first place, to turn out docile workers for German industry.
I'm not sure what the right model is, but I don't think it's market-centric or parent-centric. It has to be learner-centric.
Whatever options the market makes availiable for people with low incomes should eventually accures from new schools opening up. Unless special interest groups colludes with private schools, innovative entrepeneurs should be able to build schools that train ever more highly skilled professionals with better educational techniques.
To ensure that this process doesn't get screwed around, you cut all the red tapes and regulations on schools so that people can experiment and innovate to their heart's desires.
A better system is to go completely private. A real school would be something like "School of Grammatica" and "School of Mathematics" where you know, people learn actual reading, writing and mathematics without having to do 10 god damn standarized tests every year.
It would serve the masses without politicans getting pretenious for "saving the school system".
Then there will be tons of microschool which teaches different careers. You could have a School of Game Programming which might have a class like "Physics Programming" which combine mathematics, programming, and actual physics.
For those that alway want expensive, liberal art education, there's alway universities.