The lesson is only as effective as the teacher.
I think back about school and my expirences. I had some highs and some lows but all in all I had expirences that a home schooled individual could not expirence.
Friends, enemies, loves, rivals, buddys, clicks, the five minute break between classes when you try to walk by your girlfriend's locker to pass a note then you have to jog across the campus so you wont be late for Physics, smoking in "the pits", Homcoming games, Prom, the rumor about the girl who got the carrot stuck, pep rallys, Health class, Senior Week, Senior skip day, Tornado drills, Playing on a team with the same kids you were in class with, talking about Kevin's hot mom, mindless cafe catter, breakups, class elections, group projects, science fairs, art, mascots, :mj21: , rolling the math teachers house, cheat sheets, copying homework, learning the alma matter, school newspapers, dreaming about the hot girl four grades older (and much more developed) than you, music, pool parties, sleepovers.....
I'm sorry but homeschoolers just don't get it. I'm sure being with mom for 8 hrs a day has its advantages, but the disadvantage of missing all the little things isn't worth the trade off.