Any tips for French 3 next year?

I am a high school student. I will be in French 3 next year as I need this extra year so I can get a distinguished diploma. However I have been having lots of trouble with french. I know the sentence structures, how to make a sentence, how to be polite and what not. I am really bad at reading and spelling it though. I am dyslexic and I have already taken class for it. My teacher knows and I am, I also have partial hearing loss and I wear a hearing aid for that. I can understand what they are saying when they speak. I can not spell it though, no matter how much I try it is still so hard! I tried to use the methods I use for English class but it does not help. My teacher knows that I have trouble. When we have a test, I fail the majority of them because I can not spell in the written parts. What study aid can I use to help me? The teacher does not like me and she tells me just to study, there is no other french 3 teacher. Please help?