In college i had teachers who knew i had a stutter but still made me do public presentations to the class. Every time it was usually 5-15 minutes. I would stumble on every other word and would be up there much longer then the rest of the students. I could see them sinking into their chairs either uncomfortable with the situation or embarrassed for me. I loath Sympathy from peers because of my stutter so my face would get beet red and i would sweat, start fidgeting my feet and pacing the room on occasions to try and ignore the situation. It wasn't until years later i learned to use visual distractions to avoid thinking about the task at hand.