Email all of your teachers! I've been using the same email for 4 years now and it's worked great. All of my teachers have been very supportive and accommodated a lot. I don't have to read out loud if I don't want to, they don't call on me unless I raise my hand, etc. DM me if you want and I can send you the email that I have been sending. Also one more note: try not to worry too much if someone makes fun of you for your stutter. If someone is asshole enough to do that, their opinion isn't worth caring about. It's hard at first, but eventually it'll get easier.