And here’s the problem with modern statistical science in education.
I bet half the replies go «yeah but how representative is that sample?». Good point! Probably higher SES than the other group, probably by quite a lot. Confounders everywhere.
Better question though, is «how can we find the true numbers?», and the answer is you can’t.
I mean you could, but then you’d have to get past the ethics board with a random cohort of kids not going to school. Good luck with that.
There will never be good research on this until people warm up to the idea that school isn’t what it’s cracked up to be, and if we do get there, we probably won’t need numbers?
In other words, the idea that schools are great is shielded from criticism.
Only teachers are smart enough to educate children.
Education majors, training to become certified teachers, score an average of 1029 on the SAT. While homeschooled students (taught by parents with no formal teaching credentials) score 1190.