teach him to lift yourself. school lifting = ego boosting and bad form. if he lifts with the football team in high schol, he might even be pressurd into oral steroids. they also have no sense of progression which makes lifting look prety fuking stupid for the avid lifters. ever see someone bench 135 and stay there for a year? dafuq does that accomplish?
and teach him the importance of calories and macronutrients
if he clicks to it at 14, hes virtually limitless in possibility