A childhood belief about classes

When I was younger I was VERY short for my age. So when i was in third grade I was playing outside with all my friends and everything was going great, When it was time to go inside my teacher relized I had not yet come in. Well, I was inside, with the pre-schoolers. I tried to tell them I was in third grade and that I was just short for my age (I had a lisp). They didn't believe me and had me convinced that I was supposed to be a pre-schooler because of my size. News went around the school and when they asked me what my name was I told them, they told me they were sorry and began to take me back to the classroom. I was very angry, I kicked, I screamed because I didn't want to go with "the big kids"