Most parents when they are in the school facilities or the place where their children study feel like they are obliged or something like that not to contradict or have a different opinion from what the school or the teacher says.. I imagine that it is because of the fear that they will label or directly point out to the student that he comes from a family or has problematic parents!! I would have raised my hand and very politely told them the truth.. I don't want to sound like I'm the best person in the world... But it is not possible that I know what they are trying to do with our children and future generations and I bite my tongue!!! You have to tell the truth.