So if a school administrator tells you, the umpire in chief, that the grounds are unplayable and unsafe for the student athletes, you will allow them to continue just because you have the "sole" authority to "call" the game?
Better get your bank book,house title, and car title out, because my kid, the next batter, is going to sprain his ankle while trying to run out a grounder..........
(school has no liability as its all yours now)