I'm with EPIK but I'm pretty sure that your contract will be set out in a similar fashion. There should be a distinct section about giving notice, leaving and having to pay back your entrance allowance. For my EPIK contract I had to have worked 6 months and give 30 days notice....so I gave notice in my 5th month and will have worked just over 6 months by the time I leave in a few weeks (CANT WAIT). I hear some GEPIK contracts ask for 60 days notice...which really sucks...but I'm not sure about the time frame for repayment of the entrance allowance. I get to keep mine. I guess if you are really unhappy you could wait till the 6 month mark and then just leave (if your contact says you can keep the cash after 6 months). If you break the contact terms it MAY mess with your chances of coming to Korea again (if you care). You also, no matter how you quit, almost certainly not get into GEPIK/EPIK again. I'm going to teach in Thailand.... Good luck!