| | TEFL course
The TEFL course I took was 120 hours over 4 weeks. Since it was in Thailand, I really wish it had been longer. I took it after I had been teaching in Korea for 3 years because I wanted to know how to teach grammar and I wanted to feel more confident in the classroom. I did wonder if it would be worth it or if it was mainly meant for brand new teachers.
Overall, it was a great experience because of the observed teaching practice. I had never had professionals analyse my lessons before and the help was immeasurable. I really don't know what benefit there would be to an online course. I mean, you can read books on teaching anytime, but the most helpful part of the TEFL course, in my opinion, is the feedback about how you deliver your lessons.
If anyone has had a good experience with one of the online courses, I'd like to hear about it so that maybe I can broaden my opinion. Thanks!