So (I’m currently in college now) I haven’t asked for an alternate assignment bc I don’t want to feel different than everyone else. What I do is just say before hand “hey I stutter so bare with me!!”, and I just go for it. But everyone is different! It wouldn’t be a bad thing to email your professor, and explain that you stutter and the anxiety makes the stuttering worse, and ask if you can just present one on one with him/her! Absolutely nothing wrong with asking that!