My school eff'ed up my schedule AGAIN what do I do?

this is not the first time this has happened to me freshman year I HAD to take computer lit (requirement) and they took it out and gave me an extra study so I'm taking it this year (sophomore year) and the last day of school I had to fight with my consular to get me into improve theater guess what... I went online and NONE of my classes are even right. I have 2 studies AGAIN, health, science, chorus, english, math, and world cultures. What I don't understand is how did I get two studies and where is my improve class and computer lit. and for second semester they stuck me in a reading class...which I don't need. I understand I'm under their records for special ed but come on I'm not that special I only need it for math and they are putting me in a special ed science which I don't need I'm SICK of getting the special treatment of extra studies and no homework I want to have piles of homework and live the normal high school life. And when the normal kids choose their classes they get what classes that they want. When I want I class it has to be verified by 3 different people: My parents, my consular, and my case manager. How do I fix this mess?