Curious what twin / adoption studies say about parenting? Check out:
Yale Open courses on what makes people different (spoiler: not parenting)
Or of course read breakthrough book, The Nurture Assumption
Speaking of Yale Open Courses. watch their course on the Old Testament. What I like about it: it doesn't get bogged down in religious vs. anti-religious moralization.
"Of course not, this is a classroom, the academy, where intellect reigns supreme!"
I don't think you know what happens in real classrooms.