South Korea work/visa requirements

I am thinking of getting a teaching job in South Korea for a year or 2. Does anyone know the requirements for getting a visa there, or know of a helpful website (about the equivalent of

To get an E2 visa you will need, a passport from USA, Canada, NZ, UK, Aust, SA or Ireland, a university degree with sealed transcripts, a criminal record check (with a clean record), a job offer, and, if it is your first E2 visa, an interview at the consulate in your home country. If you get a job with a govt funded public school you may or may not need the interview. You can check out or for a laugh