Ah, the teachers union, famous for the $30-$50/yr it costs the average tax payer. If we abolished the union and rolled back everything they fought for, we could almost pay for a $10B privacy suit after a year of saving.

The public school system mostly sucks in most states (pending any nonsense with ICE hopefully resolving itself eventually, if you have to send your kids to public school the Minneapolis suburbs are excellent), but private alternatives with similar costs per student also mostly aren't better. One sticks out in my mind from recent history (somewhere near Redwood City) with a habit of hiring subs all year to reduce costs, literally not teaching the kids anything, and firing teachers who tried to fail students. The effect is, somewhat predictably, even students who try don't learn anything, and the ones who don't try know that they can get away with anything that won't put them in prison.

Regarding a voucher system, I'm not sure I care one way or another (I care a little -- it'll mean more money going to con artists masquerading as schools without improving education for basically anyone), but it's just putting lipstick on a pig. If you have the means and ability then homeschool and hire PhDs and other professionals to fill in the gaps. If you don't, for the price we pay per student you're stuck with large classrooms or crappy EdTech (or both), and if you don't spend enough 1:1 time with your kids then even a good school won't matter anyway for most students.

Mind you, of all the things we could spend our tax dollars on, I'm strongly in favor of anything which would actually improve education. I'd happily sacrifice most everything else to 10x education spend if somebody came up with a good argument for why it would help. I just don't think vouchers will do the trick, especially if we're pointing to the teachers union as the particular efficiency they're using to drive cost effectiveness.