How or when can I move out?

Hi, I am 17 about to turn 18 in 2 months… I was adopted when I was younger and still have contact with my real mother… well I want to move out and in with her…. my father (the one who adopted me) is always yelling at me and never has showed me any support in anything I ever do and if I want to go out.. he wants me home by 9:30 barely ever 10…. I’m almost an adult and he treats me like a kid… I have all A’s and a good person…. never getting into trouble… I have a job to help support myself… Why should I let him verbally abuse me??… last night he said I looked like a tramp in my prom dress.. and let me tell you I don’t like showing off my chest.. and compared to a lot of sluttly dresses mine is nice.. I even asked my teachers what they thought about it my dress and they like it… anyways… in the state of IL … you can’t move out until your 18… I don’t want to wait that long… is there any other way around it… besides being emancipated? Because they will NOT let me leave… I’m just tired of them stopping my self-esteem to the floor… can anyone help me???