I'm not in English, so I hope you guys don't mind if I post here. But I've also received the ECF and am a bit concerned about the teaching in years 2,3, and 4. Since there are people in this thread with similar questions, it might be useful if I join the discussion even though I'm in a different discipline. Specifically I want to know more about how it's possible to teach 2 classes, do your own research, and finish your degree in a reasonably timely fashion. I understand that it's beneficial to get teaching experience, and can obviously be intellectually rewarding, but there is a limit to those benefits. It would be different if these were just TA positions, but from what I understand they are more or less adjunct positions with a different title, ie, you teach the entire course. I wonder how good of a job a 2nd year student could really do with their own class, although a very dedicated person could probably do a good job at it. But to be dedicated requires a pretty significant time commitment. Which the undergraduate students obviously deserve, but might not be fair to ask of a PhD student with lots of their own work to do. I just wish I had a more concrete picture of how it works and how manageable it is.