Which volleyball rules can my state association change?

Question

Accepted Answer

Each state association adopts the NFHS rules and may modify them. Options the NFHS rules name for the state include:

Textured ball: from 2026-27, a state may adopt a textured (non-smooth) volleyball. Textured balls have no restrictions on color combinations or panel number and shape; all size and weight requirements still apply. Otherwise the ball must be smooth with equal rectangular panels, solid white or up to three colors with one-third of the panels white, and carry the NFHS Authenticating Mark.
Match length: a state may allow best 2 of 3 sets (all to 25).
Changing courts between sets may be modified.
Forfeit as a sanction may be modified.
Prematch warm-up protocol is state association policy.
Helmets need state association authorization.
An illegal-uniform situation at the start of a match is reported to the state association.

Reporting disqualifications, any suspensions that follow, and officials' registration are also set by your state, not the NFHS rules book.