Everyone wonders why I dont do my school work. I just tell them

Everyone wonders why I dont do my school work. I just tell them I dont feel like it or I dont care enough to do it. I dont care if I pass 9th grade, and Im not worried. But thats not true. I care. Im worried. Im so stressed out it is making me physically sick. Im terrified Im not going to get back into my old  school, thats the only place I can actually concentrate on school. but here, I cant do it. I don't understand whats going on. I have a tutor for every class and im still failing. I'm not doing my work because everytime i do, I fail. I cant fail if I dont try. I dont want to feel stupid. so Its just easier for me to cope with it if I just dont do it. I know I shouldn't be running away from my problems, but im not ready to do anything else about it. Im sick of feeling stupid all the time. Im sick of hearing how everyone is so sad about having one or two C's when straight C's is my goal. I cant even get C's. I have D's and F's. and no one understands that when I try, I try really hard. But it still gets me no were, so Im sick of being dissapointed with my best. Id rather just have everyone else be dissapointed with my worst.