I did something like that in high school, it was pretty humiliating. Especially when all the other kids would point out that I didn't give a presentation. The teacher just had to be like, "he doesn't have to". Since I already did it in private. I was in speech therapy since 2nd grade and then during summers went to a hospital for therapy. Last year was when I really gave up on it. I got a speech easy device and took speech therapy with the provider. I feel like everything was worse with it than before. Started going completely downhill since then. Ended up selling it