On 12th my last school year will start... and I'm so scared

I don't like my school, or at least the kind of school I chose. We study IT here, and I don't like at all, since the very first year, but I never had the courage to tell my parents that.. so here I am, doing the final year of a school I've never liked to begin with
Even though I passed all of my school years, I've always had trouble studying... I can't stay focused, neither at home or at school. And even if I can... I have dysgraphia, wichh means I can't write down what my teacher is saying, or writing on the blackboard.. I have to use the book, but not everything is in there
And if all of this wasn't enough... I'm very stressed/anxious when I have to do something for school (a test, an assignment, ecc.)... It's not a good feeling.
Phew... sorry if I threw so much stuff in here, but I needed to tell this... I don't know if any of you have any advice or something... but even if you don't, thanks for reading