The skill levels in HS baseball can vary greatly and can be easily proven by the number that continue to play beyond HS. A reasonable person cannot expect HS competition to have a team full of college level/bound players, with an approach and skill level beyond the HS level........it's likely much less.........closer to U15 overall, with some very good players sprinkled in. I say this because most college bound players have seen higher levels of play in travel ball and a majority of travel ball players will NEVER know the college ball experience.
At my sons HS, only two out of the entire program have played travel ball, a ratio of 30:1 (2 JUCO commits and 1 D1).
My son has had two outings, one in Oklahoma and one at home. At both locations, the umpires both stated they had never called a game where the pitcher was easily above 90 and apologized for missing a lot of calls but commended him for keeping his composure for not getting the calls. Son understands it's part of the process and next year he's blessed to get an opportunity to learn at the next level.
I believe it's important to understand a HS player or pitcher bound for college baseball is a thoroughbred in a field of horses and pro bound player is more of a unicorn.
Bad habits, like leaning in on a pitch...........can be a tough lesson they will wear for a couple weeks, when it's coming in at 93. It seems the armor gives them a false sense of protection. I witnessed a kid inject his head into a pitch a couple nights ago, both stupid and dangerous. I believe this to be the result of poor coaching and even worse tactic to get on base. Most "ballplayers" would rather have an opportunity to hit the ball instead of a walk/HBP, regardless the outcome of the batted ball.