I’m undiagnosed as well but I’m sure I have ADHD. Technically, you can ask your teachers or principal because, in most states, you’re legally entitled to testing (as it’s considered a disability). And, as Penny said, they may be able to talk to your parent. Or, you could also find a time when you’re Mom can talk (like in the car) and explain why you think you have ADHD without letting her stop you from saying anything. Just a thought. I had a similar problem except they all think I “grew out of ADHD.” Hope this helps!