[coygui]

I assume you are a responsible professor. From my experience, most professors if not every only cares about their research. Teaching is like a job not giving them any positive feedback, so why they care? And TA-ship is usually paid by school meaning no professor can fire TAs.

[wanderfowl]

This is sadly common, but I'd like to assure you there are many of us who are interested in pedagogy, and measure our long-term success on the success and learning of our students.