The present education system for K-12 is weak but you hate vouchers, what is your fix of the education system, if you had a say?

People bemoan he sad state of the US education system for K-12, yet they would rather stick with something they know isn’t working than try something that may be the fix simply because of fears that someone will get over by it and it won’t be them. If that is you, then what would you do to fix the current education system for K-12 (not that it will ever have a ghost of a chance to be implemented)? Would it even the opportunity for learning no matter what neighborhood you were in, or the family income? How much will it cost, more for the tax payers or it will be cheaper? Will it actually prompt teachers to teach and make sure the material is understood, and stop schools from simply passing students just to ”get rid of them and get them out of the way”? What is your solution, and have some solid details?