Not being an atheist, I'm not keen on telling little kids "Your/Your parents' god isn't real!" However, I do delight in pointing out the hypocrisy anytime someone talks about religion in school. It's only okay so long as it's Christianity, but they're really inclusive, honest! Just they only want to include the good religions...that they determine.

Personally, I'd love to see the true history of various Christianized or Christian-centric holiday become a requirement in education.