Yes if you aren't military personnel then you will have to fly home and take the tests. There are three and you have I think a year after you finish the program to take them but the sooner you do it the sooner you get certified. The program is 9 months. I started in Feb and ended in Nov - during the summer there was a big project to do and then some down time.

As for actually going to a school I don't know if you could do the book work and then come home and do the practical experience because a lot of the work you do is based on what happens in class. You could though push it to say the last few months of the program and cram it all in. I think a lot of people did that. If you contact the people at the program they can get you in contact with someone who did the course while in Korea. I actually moved home to do the program.

I would highly recommend looking into the Teacher Ready program further. If you were wanting to stay in Korea perhaps moving to a hagwon and then doing your student teaching at an international school there would be beneficial. I just finished the program and I am waiting on the state to finish my paper work. I know hagwons there can be looked upon in bad light many times but I was there for three years at one and loved it. If you have any questions about the program, I'd be happy to help.

Is there a job fair similar to AASSA for Asia? Or does one of the other recruitment fairs generally have more schools from that part of the world? UNI? Search? ISS? I would like to move back to that part of the world and I am looking to limit my expenses in terms of traveling to fairs and what not.
Thanks

You will, hopefully, be able to get a strong letter of recommendation from your mentor teacher. I am in the final phases of the Teacher Ready program as well and so far I have got a lot out of it.