[2devnull]

“ Allowing poor students from families that value education to go to schools with like minded students is an unequivocally good thing compared to what the public schools currently do.”

But it is sort of what schools currently do. The filter public schools use is housing. You have to buy a home in the school district. That is the reason real estate values are driven by school test scores. Because the opposite is also true: school test scores are a function of who own homes near the school. At the end of the day, maybe that operates better at sorting good apples from bad. I’m probably more in agreement with your line of thinking that making choice easier for poor folks could be best for society, but the selection effect is weaker if you loosen the filter.