First of all, Blade, I seriously dont blame you now for not being religious, not that I really blamed you before, but now at least I know why your so against it. lol

BTW Hypo, yay for being agnostic! Its understandable some people would find it hard to believe in religion, but I like the agnostic people the best because they at least acknowledge the possibility. Everythings possible and no one will know for sure til we're dead XD Anyway as far as religion in schools, what Blade said is very true. Rudy also went to a catholic school but only for 3 years during middle school, but that was enough. He got teased a lot and made fun of by the other kids because he came from a public school and they looked down on him for that. Also, he didnt go to church growing up so everything they taught was so foreign to him, and as a result the teachers would even single him out and wanted to hold him back a year. The beef I have with the catholic religion (and most established churches) is that they dont understand they cant FORCE someone to believe in God, theyre so caught up in having to "save" everyone whos "lost" that all they really succeed in doing is driving them away from it.

While Im not in favor of keeping religion totally out of school I am in favor of keeping it from being required. Religious education is up to the parents, it shouldnt be forced upon kids because Blades right they are impressionable, and when their older they can study all the religions of the world and choose the one that fits best with their mindset. Religion shouldnt be driven into anyones head.

As for my own experiences, I grew up in a christian household, and Ive been to so many different denominations churches because my mom couldnt decide what she wanted to be, so I dont consider myself to be any denomination and I dont go to church. Ive seen how some christians either in school or at church treat other people bad just because of what they believe or dont believe. or how they dress, or how much money their parents have and I decided worshipping publically wasnt for me. I pray on my own and I dont need church for that. Also my family was rather poor growing up and we didnt have a lot of good sunday clothes, and my dad has a long beard and works as a mechanic so they pretty much judged us by our appearance which isnt very christian-like >.>
And unfortunately at school I also got criticized for BEING a christan, we had this christian club called the E.D.G.E club that I went to twice since I was invited by my friend and people would tease us and be loud on purpose while we were praying and it was just all around not worth the stress to go when I can pray at home. Also their signs got torn down and wrote on which wasnt very nice but basically high schoolers will pick any reason to make fun of someone lol. I think religion shouldnt be forced into schools but I also think people should be allowed to pray to whatever god they want in school without retribution so long as it doesnt disrupt class (aka as long as its quiet). Also to make everyone happy both theories of creation (evolution and creationism) should be taught in school and let the individual decide which they believe, because all in all both are just theories and not fact so theres no harm in learning both.

ANYWAY sorry Im so long winded, the short answer to your question is, yes Ive seen discrimination in schools based on peoples religion, I dont know if its like this everywhere but in my school if you were gay or athiest you were cool, and if you were christian then you were a hater and should be punished for any kind of religious talk you may or may not try to share. In an ideal world we could all get along despite having different beliefs but this world is far from ideal >.>