Before the takanah of Rabbi Yehoshua ben gamla, every kid was homeschooled. As Joseph said, it didn’t work for everyone, so schools were invented. Unfortunately, as the chazon Ish said, many schools are a “Sdom Bettel”- a Procrustean bed where kids are made to fit a mold that isn’t necessarily suited for them. I do know of a case of a kid who was homeschooled as part of the father’s way of controlling and brainwashing his son. This kid is now shy and has trouble dealing with kids.
BYoBP is “too big to fail”. But I don’t think schools should ever get that big. Howwm uch personal attention can you get when you’re one of 2k kids? It works in Lakewood for older men, but for younger kids?