Shirt tucked in

[FishinRef]

Jurassic Referee Quote:
I know that I'm gonna kick myself for starting this but.....

This came up on the NFHS forum.....

Does the shirt-tucked-in rule(NFHS 3-4-15) apply at all times and any time during the game? Pre-game warm-ups? Bench personnel? Intermissions?

If so, what is the penalty for non-compliance?

I don't have my books handy to verify so this is strictly my opinion, The rule applies to all players involved in "live ball" situations. I do not believe the rule pertains to bench personnel or players during intermissions. To be blunt, "If we are playing ball, they will make every effort to keep it in."