Sounds like you may be a classic case of slipping through the cracks. You do well enough in school that adults think you can’t have any challenges other than being lazy. It’s extremely unfortunate, but common.
Try this self-test to see if you’re on the right track:
If you’re parents won’t hear you on the subject, you may have to wait until you turn 18, then take matters into your own hands and schedule an evaluation.
ADDitude Community Moderator, Author & Mentor on Parenting ADHD, Mom to teen w/ ADHD, LDs, and autism