5 skaters + 1 goaltender per team on the ice during regulation play; Roster: typically 25-28 players for NCAA D1; suit list 20-22 per game; Unlimited line-change substitutions on the fly through the bench area or at stoppages
Why people argue about this
People often think that ice hockey players can only change lines once per game, which is why they argue about line changes being unlimited - actually, there's no limit on how many times a team can make substitutions in regulation play under NCAA rules. The rule allows for as many line changes as needed to keep the team fresh and competitive during a 60-minute game.
