Son graduated at 17yrs : 8 mts. He didn't skip, just started as a younger student. Baseball/sports was the last thing on our mind as nobody ever played beyond the high school team. Because he was often a smaller kid on the team, he had to make up for it by working harder and understand the game better than his teammates. Even today he knows he doesn't have the physical build, athletic gifts, etc. that majority of the other players have, and he must continue being a better student of the game to succeed.