Okay so this battle has been going on such a long time. My mom has been yelling at me about colleges and how I should already start reading the mountains of ACT and SAT books my sister gave me. I tell her I should be having fun since I'm only 13! I try so hard in school and I over achieve but she says it's not enough because I have to play an hour of piano daily but I can't fit it in my schedule since I have ballet right after school. I'm also stressed about my body image and people tell me I'm crazy for not liking myself, but I just don't see myself the way they do. I just slept-off a huge argument with my mom and she was yelling at me about how I'm crazy and how councilers are just blood-sucking paracites! I have no idea what to do! My mom called my sister threatening her to kick her out if she gave me any ideas about the whole "Why am I the only person who doesn't even control little parts of my life" and so my sister started telling my mom she needs to keep me in the house because I'm crazy and hormonal and I get whatever I want (which I surely do not considering I buy my own clothing and furniture with the money I do not have because I'm not old enough to work!). So they just exchanged over-exaggerated stories and I gave up from then on and just agreed and admitted I'm crazy. I feel like this whole thing is twisted up to look like I'm the bad guy. What do I do?

Ask your mother what she thinks your problems are and what she thinks you are suppose to do to fix it. Since she thinks you are crazy she must have some constructive criticizing to back it up since she feels counseling isn't the answer.
Since your sister seems to be trying to keep you in the house with all this work. Spend a day going through the work and pick out some hard questions you don't think she will be able to answer. Then when you get the chance tell her that if she can't even answer the questions she expects you to be learning then you don't see the point in learning stuff that she doesn't even know herself.

First of all I really think you have too much on your plate and your mother is putting on too much pressure. No one thinks straight when stressed. Your day shouldn't be so jam packed and hecktic and you have PLENTY of time for college looking you have at least five years for that

I agree, you do have too much on your plate. A self-image, piano, ballet, normal school work, and your mom is making you study for the SAT and ACT? Your mom shouldn't stress out about that just yet, maybe right before you actually take the stupid tests. If you do good in school, or just really understand in school, and pay attention, you will be fine for the tests. My dad bought me all those books too. He wanted me to take both tests, multiple times. I waited until the last moment and took only the SAT, once. And I did extremely well. I did that on purpose too, if you asked my dad, hed probably say that I am lazy and that I didn't have my stuff together and that I was lucky. You really only need one set of scores. It is better if you have both, and very better if you scored high on them. But one score is mandatory. And they won't except any if there are more than 3 sets. I took the SAT in January of my senior year. Your mom is crazy to think that you studying NOW is important. If you are studying for one test, most of your high school career, you won't focus on other work. And once the test is over, what will you do? You won't know what to do with yourself. Occasionally look at the books, glance over them, a couple of times a year, but don't actually study them, until you are getting ready for the test. But I didn't really need the scores, cause I joined the military. If you do ballet, you probably have a very good body. I wish I had a dancers body. I don't know how to make yourself see it. Try to get to know your body. Pay attention to the way it moves when you dance. Focous on the sensations of the dance. You could try yoga to relax you when your stressed, esspecially before bed time, or after a fight. Deep breathing helps too. Don't scream when you fight. It takes two to argue. If one person isn't yelling, it's a conversation. It will be difficult. But eventually the other will lower their voice and it will be a conversation. Or if you want to tick your mom off, agree with everything she says. It will feel good, at the time your doing it. But you won't get anything across. But they will think about it later. Your best bet is to bite your lip, keep your head down and get through it. I think your sister should get kicked out, that way, you and your mom will be even in an argument.