I have recently started substitute teaching. I want to become a middle school teacher but most of the jobs I receive are elementary school. A lot of these classrooms have teacher assistants. I was wondering if it is normal that the aide takes over the class when there is a substitute. I've had varied experiences with this. Yesterday, I had an experience where the aide lead the class when she was in the room and also referred to me as the babysitter for the class which was odd. I have no issues with the aide leading the class since she knows the procedures and the students the best, but I don't want it to seem like I am slacking on my job in any way.