hi there.
im afraid i dont have much advice about surviving school except to make the effort to get a therapist or some sort of support system set up because you dont have to do it all by yourself. i just finished school last june and have been with my therapist since the july before that. before i had a solid therapist i could trust it was torture. i have anxiety and depression and it would routinely get the better of me to the extent of missing exams and having to extend my studies by a whole year.
i empathise so much. you dont have to do this alone. for coping with the stress of school head for the computer lab sometimes instead of the library and talk to us here. and find someone to talk to in 3D. you are worth the effort.
good luck,
biiv