All of the lessons learned in Mayberry were certainly not learned at Mayberry Union High. Let's think about important lessons learned by Mayberry citizens:
Opie learned a valuable lesson about heedless actions when he killed the mother bird with his slingshot. By the time he had raised those babies and let them fly free he was a more mature young man.
The Man in a Hurry learned the business world wouldn't fall apart if he took a day off to relax.