Pretty much. More and more of the educational research shows that how and what students learn at, say, 2-4 years old is super-important, which ultimately means how the parents raise the child is very important. I'm definitely in favour of making pre-school public, but even then there's only so young you can go, so yeah. If any of you ever have children, don't fail. Read them a damn book now and then.
Also, mc, for what it's worth, early adolescents (10-14 or so) are typically considered harder to teach than younger years, according to my elementary/middle school teacher friends. Though yeah, certainly works as a general trend. University cheats because they actually want to be there and because it's only the top 20-40% of students anyway. (If I could teach nothing but above average students, my job would be a breeze, too.)