It’s going to be hard but you have to stick up for yourself. Don’t know what it’s like in your country/school, but here in Australia and at my primary/high school and university I had provisions where I opted to not be called on in class, and instead when I wanted to talk, I would raise my hand voluntarily. Similar with oral presentations - opting to do them privately to the teacher and (if i wanted) a small group of close friends rather than in front of the class. Also learning a language as fast as Spanish or Italian in my case is super hard so give yourself more credit!! I would hope the school has a disability advisor/ special needs support staff, have a chat with them to see what they can offer to make you more comfortable in class :) Also if any kids give you crap about your stutter, tell someone. No one deserves to be treated differently just because you have different needs. You are unique and special and never forget who you are <3 Good luck and happy to chat more if you need!