I think that also depends on the size of your class. Luckily, we have smaller study groups where we need to solve problems together, as opposed to sitting in a full virtual class of about ~30 people. One reason is that I can sympathize more easily with people in a smaller groups. The more observers I have, the more I fear someone is going to judge me about it. I am forced to speak sometimes because that's a criterion for passing the course and fortunately that's worth enough to me to temporarily overcome my fear. If people are nice you might also tell them about your stutter problem directly and some will understand and respect it. School is a little less forgiving but as you grow older people are generally a little more conscious about mental health and are not as focused on being the class clown as before. Edit: In school I also had very understanding teachers. I needed to tell them, though, that I had anxiety problems and a stutter. Most of them subconsciously gave me better grades for trying to participate in discussions even if I didn't get out much. It might seem unfair to others but on the other hand it really helped me trying more and becoming better at speaking fluently.