break a lease to move out of state?

I live in IL and I accepted a job out of state so I will need to break my lease. with all the legal jargon, I cannot understand if it says I will be penalized. It says cannot sublet, so I have no idea! The management is horrible, and it has a high crime rate so I doubt I can find someone to sublet. There is an extended lease, but I did not have to sign it... I only had to sign the normal lease. So I do not understand,... is there a way I can break the lease due to an out of state move?