I was a PG kid who was never skipped--unless you count the mixed-grade classrooms of my tiny, rural, elementary school. I seriously missed my older peers when they went to middle school.

I had no real peer group until I got to college, and I was suddenly surrounded by people of a similar intellectual level and interests. Keeping me with my same age peers in middle school and high school did me no good whatsoever, socially.

What were the results of that? I was a bit immature when I got to college. My social life was a siren song I could not resist. I didn't learn to balance schoolwork with social life until about three years after I graduated from college. Since my work habits were abysmal as a result of no challenge from first grade to high school physics (and because my private liberal arts college did not inflate grades), my college GPA was under 2.5, and I almost flunked out at one point.