Wyatt and the other boys wear wrestling head gear in gym class. Schools don't distribute head gear when introducing boys to wrestling in gym class, only to those who join the school team.
Gary calls gym class a spectator sport, referring to the many classmates gathered to watch the boys wrestle. In fact, gym classes are not spectator events, and wrestling sessions are either conducted in a wrestling practice room (in other words, behind closed doors) or in an area where mats can be rolled out without distractions from bystanders.