[APG]

Could you make the rules all the same? Sure you could, but there are rules needed in the pro game, that don't exactly vibe with the ideas and philosophies of NFHS and vice versa.

Player gets fouled (non-flagrant) during a try and can't attempt his free throws...well are we going to go with the NBA rule and allow the opposing coach to pick the shooter along with not allowing the player to return for the rest of the game? Or do we go the NFHS route and allow the coach to pick the replacement shooter along with allowing the player to return in the game?

The NBA rule is needed because winning is of the uttermost importance and their rule discourages, say...Dwight Howard from getting "hurt" and allowing the coach to put a better shooter on the line...and bring back Dwight soon after (and now we'd get into substitution differences between NBA/NFHS but we'll keep this simple). In NFHS, where winning isn't the most important aspect of the game, their rule works fairly well for that level (though I think they should go the NCAA-M route).

There are also rules that are made the way they are in NFHS because the talent disparity between officials is vast. So in essence, there are rules and enforcements that are kept simple for the entire officiating pool. You want to burden some officials at the high school level with having to determine a secondary defender versus a primary defender, and then adjudicate an RA play...when some can hardly get a regular block/charge play correct? And then possiblly add in whether a play originates in the lower defensive box (NBA and NCAA-W)?