“There is a huge difference between a siddur party and an xmas party, making a lulav out of paper and making a tree out of paper etc etc. And if you don’t think there are books like “Heather Has Two Mommies” in grades K-4, think again.
And there is a huge difference between a sem graduate who comes from a large family, and a secular graduate who has one or two brothers or sisters and a dog, teaching nursery school.”
there is a difference between all of those things, you are right, but these days many preschools wont make a christmas play or tree precisely BECAUSE many of the kids in the class are of other religions. as for the books, no matter where your child is, you always need to check out what they have access to BEFORE they access it. if you are uncomfortable with something, bring it up to the teacher. i have dont this quite a few times, both in my son’s class and in the classrooms in which i have worked.