This may be something like "the child's parents asked us to let her wear the skirted uniform, and I said yes, but her math teacher made a fuss because he insists she's a boy. This way I don't get caught between parents and staff." Of course, that won't actually resolve the problem, if such a teacher insists on calling a trans student "Michael" or "Mr. Smith" and the student is Miss Smith and now wants to be called "Suzette."