[Jimgolf]

The GPBOA website ( http://www.gpboa.org/Rules%20&%20Mechanics.htm )has some good articles for beginning officials.

One in particular is regarding hand checking, and was written by John Basorist, a D1 official in Michigan. The full article is at http://www.gpboa.org/Articles/Handchecking.pdf but the gist of the article is :

Hand checking is NOT allowed on the ball handler. Referees have the misconception that "I'll call it if it impedes the ball handler". That is not the direction referees are being encouraged to follow. ONE warning is given to the player, and if there is another infraction, then the foul should be called.
The following are hand checking guidelines for all referees:
It is a foul If;
• A defender leaves his hand on an opponent
• A defender continually places hand(s) on an opponent
• A defender places two hands on an opponent
• A defender continually jabs an opponent
• An illegal arm bar is used by the defender
Incidental contact with the hand(s) that does not impede the progress of an
opponent is NOT illegal. The defensive player's action of feeling for a screen that may be set to the side or to the rear is NOT illegal.

Also:

Warn the players ONCE and then call the foul! This also applies to illegal arm bars placed outside of a defensive player's cylinder. An arm bar may be used when defending in post play but it is NOT allowed when FACE to FACE with an opponent or a guard is defending the ball handler.

Are these guidelines appropriate for NFHS?