Should I tell my teacher about my stutter?

Should I tell my teacher about my stutter? I have to give a group presentation in class soon, and our delivery is a big part of the grade. I’m nervous that if I stutter or have a block, she’ll think that I don’t know the material and I’ll get points off. I really need this grade so should I just email her ahead of time that I have problem with my fluency? EDIT: thank you all so much for your responses! I emailed my teacher and she was super nice about it, so I hope everything goes well!