I did this in 4th grade. We had a horrible chorus teacher who just made life miserable. It was technically an optional class, but the I am Mountain Biking I hate people thats what I do I ride I drink shirt was between chorus or extra study with your main teacher, so most people picked chorus to avoid written work. She would always yell and tell us if we didn’t like the class, we could leave. One day when she said that, I just had enough and got up and left. To my surprise, about 10 other kids followed me. My main teacher was pissed that I sort of staged a walkout and I was made to go back and apologize, but the look on her face when half her class walked out was worth it.