It is just like the case of a Muslim woman sometime back (possibly in the US) who refused to get herself photographed for a driving license without taking off her veil, turning the whole thing into an issue. It is one of those things some Muslims use to get undue attention just as was in the recent case of one "Muslim" traveler who insisted to pray on the floor of an airplane in flight near the emergency exit gate. Such stray incidents would continue to occur all over the world and should not be used as yardstick to measure the belief and thinking of the entire community. I agree with Brit that if the children were that sensitive, they should not have been taking lessons from a female teacher let alone be in a class where there were females studying with them.