Nearly the same thing happened to me. Except the instructor felt the other kids would be dissuaded by my typing and told me I couldn't stay in the class. And,

Nearly the same thing happened to me. Except the instructor felt the other kids would be dissuaded by my typing and told me I couldn't stay in the class. And, similar to your case, typing was a prerequisite to taking any other computer course. They wouldn't give me credit, but wouldn't let me stay in the class either. I would up taking it in summer school of 9th grade, spent 2 days, the program clocked me at 139wpm and the teacher(a different one) said I couldn't stay there either. She talked to the office and I got to hang out in the school office for the rest of the summer. What fun. All because they didn't want to make the other kids feel bad. At least they gave me credit for the class.