All the kids with engaged parents who participated in online classes from home probably did just fine.
I'm not saying going to school doesn't matter, I'm saying that what kind of school you go to is going to matter a lot less if your parents can't do a good job. Or put another way, what kind of parents you have is the dominant influence in your educational outcome.
This matters because when thinking about what kind of policies are needed to influence educational outcomes, they may not need to directly have to do with school.