Keep telling yourself that.
If they are in the gym with a CERTIFIED S&C Coach then yes, they can work on form, etc.
Too many schools in Ky. have PE/Football coaches who know a little about lifting that are in the weight room with these kids, its even worse at the MS level.
Kids develop differently, but a 6'3" 240 14 year old is just as susceptible to injuries in the shoulder, hip, and knee area as a much smaller 14 yr. old, maybe even more so.