Stutterer and speech therapist here. First off… fck all those students and teachers, that’s absolutely terrible… I dealt with a lot of the same things when I was in school, kills me that it’s still happening to kids. I’m not sure if you and your family have the means to look into private speech therapy, but if you do, I would highly recommend trying to find a speech therapist in your area who specializes in or has a background in fluency therapy. I had countless speech therapists what weren’t able to help me, but I eventually found a speech therapist who stuttered and it changed my life.