I think a lot of the time, people close to us tend to 2dimensionalize us in certain ways. They often forget to see the whole picture of things and sometimes fall easily into what we project to them and what they project on us. My mom falls really easily for the happy picture of a normal person I pretend to be haha.

Also, teachers see a lot of kinds of kids. I think it also has to do with exposure and sometimes the further you are from the situation, the clearer you can see. I'm glad people have taken notice though Please definitely try to reach out to anyone you feel comfortable with! None of my teachers, friends, or family noticed until I was already barely functioning at all. And even then I had to tell them my symptoms and etc. I'm glad you have people who can see clearly!