I’m going to be quite frank here and I want you to know I have only your feelings at heart here.
What other people do or do not do should be none of your concern. If you cannot tolerate your children attending this school then put them in another school. Do not sacrifice your ideals.
Your business is to attend to your own rights and wrongs in this life and leave the lives of others to God. You will not be judged according to THEIR actions, but to yours.
Do not covet your neighbors posessions (or place in society). In the end it doesn’t matter.