hello, 27M here 👋🏼 high school was rough for me as well, even to the point where one time we were having a class debate and one of my English teachers literally docked me (and my team) points because i had a block while trying to talk during the debate (still haven’t forgiven him to this day lmao). not sure if this helps but i did find more success talking in smaller groups while in school. i just felt more comfortable with myself and with speaking in general. i think a part of me knew that not everyone was listening, so even if i did stutter, it wasn’t that big of a deal. also - if you know a class will require lots of vocal participation or something, i would definitely disclose that to your teacher, as well as mention it during your first time speaking to the class. it’ll lift a huge weight off your shoulders and help you deflect avoidance behaviors like losing eye contact and changing your words. you’d be surprised at how understanding most classmates are, especially bc they’re likely going through something personal as well and can relate to the vulnerability. remember, high school is a time where you’ll come across lots of immaturity and unfiltered bullying. the real world isn’t anywhere near that (as many have said). you can do this!