Regarding your note at the end, Definitely let your teachers and classmates know you have a stutter. Because people with bad stutters usually try not to speak, no one knows what a bad stutter sounds like! For that reason I'm always encouraging people to openly stutter in front of people to show them what it looks like and sounds like. It's easier said than done because it feels embarrassing, but I think it's really important. Most importantly tell your teachers. If they know you have a stutter, which in some places is considered a mental illness, they cannot use it against you when grading. If they just think you're bad at presenting, then it might. So it's important to let people know and be very open about it. Also, stuttering does come and go sometimes, so it makes sense that yours got better certain years, then came back, etc. Can have a LOT to do with stress. You said your parents are from Vietnam - are you Vietnamese or adopted? Really interesting to hear you say they were forced to write with a certain hand and how that might be a cause. There's very little research done on stuttering, but it would make sense how it can correlate with "forced disfluency" in other areas, if you will. You gave me something to think about! Unfortunately many stutters can't be cured, just worked around. Personally I've been told mine is permanent - I just have to learn how to substitute words and breathe differently when speaking, always. But even if it can't be cured, instead of giving up and saying "eh, can't be helped" (like many people on this subreddit), it's important to try! To always strive to sound more fluent, so we can build our confidence when speaking. It's a great opportunity for us to build character. Thank you for your story! Good luck, much love.