if you leave they'll look at it as you "self-deported" yourself. I don't know about how long the ban is.. Just be careful about your decision, it could haunt you in the future when your older and able to make wiser decisions. I would discuss it with parents or counselors before going through with the decision.
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Self Prepared - NYC to Chicago Lockbox - Delivered: 10/09/12
G-1145 Notification:10/12/12 to
Vermont, I-797C Received:10/16/12
Biometric Letter: 10/24/12, Biometrics Done: 11/06/12
Application transferred to Nebraska 02/20/13
DA Approved: 04/08/13,
EAD Approved: 04/05/13 [6 months]