I am sorry that your mother is not living up to her responsibilities. Many parents are over whelmed with their own lives. I agree that you should talk with a counselor, have them arrange visits to colleges, have them help you with grants, loans, scholarships--REMEMBER the squeaky wheels get the most notice... ASK, tell them your dreams, tell them you want help. IF they don't get busy, ask a teacher, a librarian or a relative--keep asking until you get someone to notice!
IF things get too bad---print this out and let her read it.
I will tell you that this is good practice for "real life". think of all the things you will be able to do/handle when you go to college. You will know how to balance your schedule, your time, you will know how to cook, clean and do laundry. AND you will remember that this is not how you want to treat your children.
Prayers for you...Dixie