I have no interested in teaching, but I watched this last night. It was pretty good. They were definitely pretty naive going into it. Pretty early on, they realised how tough that the job was. Especially the English teacher. Taking on the bottom set kids and expecting all of them to pass. Then realising they couldn't even write basic sentences properly.
The Science teacher also had a hard time controlling her class. I have no idea how people can handle that. So many of those kids were complete ********s. Makes it worse, because they're all very young looking teachers and the kids obviously know that they're new to teaching. The respect levels already start at a low point.