• “She favors smart students over the regular students which is bias.”
• “She expects us to be too mature”
• “She expects us to actually be interested in the course material on our own”
• “By requiring us to post on WebCT before class, she forced us to do the reading ahead of time, which is very difficult and unfair for students with other obligations”

And many more.

One of my own favorites (from last fall)
“I believe I would have enjoyed the readings more if they were written in Turkish.”