To the degree that some positive results may have emerged at some point in the past from government run mandatory school attendance, that was in part due to the fact that the local parents, teachers, administrators and the general local population had common goals for the students. That is no longer the case. Under the current adversarial relationship among all parties listed above, accidental progress will become more and more rare.
The results of government schooling are as irrelevant to its immoral treatment of its captives ( misnamed: “students”) as good or bad results were to those trapped in slavery. Regardless of whether emancipation yields materially measurable positive or negative results does not erase the assault both institutions are to freedom of conscience and to basic God-given First Amendment human rights.
Please remember that some slaves were worse off materially after emancipation but that some were more comfortable in slavery, and that no perfect plan for emancipation existed, did NOT justify keeping men in chains.
In the same way, some students ( whose only crime was to be born) may have benefited, and may now benefit, from compulsory attendance ( AKA: imprisonment) in the government assigned indoctrination center ( misnamed: “school” ) Whether the inmates of a government school benefit or not does not erase the crushing abomination government compulsory indoctrination is to freedom of conscience and First Amendment Rights of the students and parents, and to the taxpayer who is under the police threat to fund it.
Fundamentally, it is impossible for any school to be religiously, politically, or culturally neutral. When government owns and runs compulsory imprisonment schools and forces the taxpayer to fund it, the most powerful voting faction will impose its NON-neutral worldview on the less powerful.
Fundamentally...Government schools are a First Amendment and freedom of conscience monster. Just as in slavery, it must be abolished regardless of “results”. Respect for the human spirit yearning for freedom demands it.