hi-

as a former teacher at sis, i can also attest to the fact that sfs and sis are the only places to work in seoul. hogwons are a risky business, and i know several people who have been severely screwed over in the process.

as the previous poster noted, sis is for profit, and the owner is very quirky, but the school runs smoothly and efficiently thanks to a relatively solid administration, particularly the ms and hs principals.

seoul is quite expensive, but on salary from one of the aforementioned schools, one can manage to save quite a bit of money while living in a safe and secure country. that said, if you aren't certified, then you don't have a chance at either of these schools.

good luck.