Decided to try calling games about 10 years ago and went to umpire school run by local association that called everything from LL to college in Tidewater VA.
They actually spent about 90 minutes talking about staying behind the catcher in youth ball vs holding the slot in middle school and HS.
They were adamant that staying behind the catcher in youth ball was the expectation because it just wasn't worth $25 a game to get stung repeatedly by the ball because of catchers that really were not prepared to play the position not to mention pitchers that had no clues where it was going. That meant if you got bit by a pitch, it was kind of your fault because the kid would knock it down if it was going to hit him but would never block it off to the side.
The other thing they talked about was never ringing up a kid - they viewed that as unprofessional and a blemish on the association. HS ball was different more room for give and take but youth ball was meant to be more fun and developmental even if it was still competitive.