Do I have ADD or am I just lacking willpower to do well in school?

If your not intertested in school your just simply not interested. They said I had ADD when I was in JR HIGH / Highschool, but the plain simple fact was that I was not interested. I refused to take the medication they tried to give me. I'm doing fine now. I went to college and actually wanted to be there and did well, it has nothing to do with ADD.