If you’re comfortable I would def try to pull your teacher aside and explain you stutter a bit more. Focus on the fact that there will be times you 100% know the answer, you could write it down at that very moment, but you physically will not be able to say it. Ensure they know its not anxiousness, it’s not that you don’t know, and it’s not that you don’t want to, it’s that your body can not do it. They might say something like “oh my cousin got nervous too and would stumble” and you gotta shut that down asap. I’ve had more good feedback from that sort of conversation than bad or neutral. It got me through school. Idk what I would have done otherwise.