A stud earring, IMHO, if taped, is not a hazard to anyone. I let them play, not of course during a HS game. The other piercings are harder to let go. Last season I happen to notice a tongue stud on a player during warm ups. When I asked the coach if all his players were conforming to the legal uniform rules, he said yes. I then call #20 over and said," Here is your one and only chance, stick your tongue out at me." When the coach saw the stud he was shocked and made the whole team show their tongues. I wonder, do we have to ask both teams to show their toungues to us before each game?