Politicians have been claiming they're going to fix public schools for my entire adult life and haven't made an inch of progress in that time. We need to abandon the delusion that there's one weird trick (that doctors hate) to fix public schools and instead move to a different system.
if you think privatizing the school system is going to fix it, i suggest you look at other instances of privatization (prisons for instance, or utilities in many states and provincies) and see how that went.