This was addressed by NFHS in the Points of Emphasis in 2002-03 and also in 2003-04. I knew I had read this in a rules book before and dug through my pile of older books and found it.
From 2002-2003 NFHS Rules Book:
3. Sporting Behavior -- Pre-game Situations
The committee discussed specific, inappropriate pre-game situations that must be stopped immediately. Coaches must demonstrate leadership by immediately putting an end to these practices. Officials must be prepared to stop these unsporting acts and penalize the offending team(s) if necessary.
Teams are deliberately running through or disrupting the opponent's pre-game warm-up. Teams are also competing for the center circle when entering the court or following player introductions.
- The state or local athletic conference should establish appropriate pre-game procedures and protocols. A policy could be established confining teams to their own free-throw semi-circle for pre-game huddles or rituals or that only the home team utilizes the center circle.
- Coaches should take an active role and establish guidelines for their teams and permit only those pre-game rituals that promote sporting behavior and cannot be interpreted as taunting or baiting the opponent.
- Officials should be prepared to assess a technical foul to a team member/team demonstrating these unsporting acts. The specific innappropriate actions of a few team members may be individually penalized or the entire team may be assessed one technical foul, if they collectively engage in any inappropriate behavior(s). Since all team members are considered bench personnel before the game and during intermissions, the head coach would also be charged indirectly with the techial foul (10-4-1d; 2-8-1).
So regardless if your state did as advised, we are to be prepared to penalize these unsporting acts.