Hello danceislife: I'm an older person now. But, decades ago, when I was in high school, because I couldn't tell my guidance counselor what I wanted to do when I grew up, she told me I was going to be a bum! So I don't have the greatest confidence in guidance counselors. Hopefully they've improved over the years! I can't say whether or not you should talk with your guidance counselor or not. Likewise for your teachers. You know them. However, one thing is for certain. If they don't know about your ADHD diagnosis, they can't help you with it.

It sounds to me as though you're having some difficulty accepting your diagnosis. On the one hand, you're glad you finally have it & are getting some help with it. But, on the other hand, you'd really rather keep it a secret, especially from your friends. There is often discussion, within the mental health community, with regard to whether it is better to "come out" or to remain hidden. Ultimately, this is always an individual decision. However, I would like to suggest that it is something you should give some serious thought to. Carrying around secrets can be tough. It can become a way of life. I know because I've spent a lifetime carrying allot of them. After a while, they can drag you down. There is something to be said for letting the sun shine in.

I wish you all the best...