Free Throw Violation- Shooter with ball

[lpbreeze]

So I don't know the rules too well on this other than the traditional violations leaving the lane early, etc. For a shooter.
He had the ball dribbled and then put the ball up and pushed it upward to practice his shot. A couple of feet straight up above his head. Ball came down, caught it and then shot the ft. I called a violation. I've seen players practice their shot but without the ball. I'm fairly sure I got this right but I wanted to check. high school.

Also, does anyone have a link on the difference for backcourt NCAA vs H.S? ball off D player than off offensive into backcourt that is a violation but not in the NBA. Is it in NCAA?