If a prospective patient calls, let’s say, an insurance company looking for a new doctor, the representative may ask if that individual has a preference for a male or female doctor. Whether you like it or not, some patients feel more comfortable with one sex or the other.
Would you take away that freedom of choice? What’s it to you if a man would prefer to talk with a male Principal about his own children?
Oh, incidentally, I don’t think it’s a male superiority/female inferiority thing. Both sexes obviously serve a divine purpose, although Muslims aren’t foolish enough to believe the two sexes are equal.
There is a prohibition on men and women who aren’t family meeting together alone. Look how well meeting alone with an unrelated woman worked for individuals like Kobe Bryant. Maybe that’s behind their not meeting with a female teacher in person, but with a male teacher or Principal instead.
Some states have similar rules, for example, in MA, if a male doctor performs an intimate exam on a female patient, like a Pap, a female assistant must be present as a witness. The two sexes can’t be alone without a third party present. Saves both parties future indignities like molestation or false accusations.