High School Sub Change Both teams on throw-in?

[rickh]

By rule in HS the team has to notify the referee (or nearest official) prior to the ball going out of play that they want to sub. Allowing both teams to substitute would only be feasible if both had previously notified the officials. The NFHS put the notification to speed up substitutions and to eliminate delays in the game. We need to remember participation includes keeping the game flowing for the enjoyment of the players on the field.