I had the opposite experience from the above poster, as pretty much the whole poli sci department where I attended college was biased towards the conservative side. I had profs that would comment about how my viewpoints were wrong, even if I had argued them effectively, with evidence, and met the parameters of the assignment. It wasn't like I was scarred for life or anything. Learning to defend myself ideologically was part of my education too, so I'm grateful to them for that.
One of the major news magazines published an article in the recent past on religious and political bias that the Conservative Right students have experienced in their college classes, such as Political Science, and Sociology courses. Since the majority of professors lean toward the Left in their perspectives, Conservative students, according to this article, met with ridicule in the classroom as well as lower grades. When some complained, they were met with more bias and even had to withdraw from the course.
Oh my. For the record, let me state that I absolutely loved (and love) my alma mater, treasure the education and experience I received there, and would not trade it for anything in the world.
That said, there was (10 years ago) and continues to be an enormous amount of bias against homosexuals at Baylor University. While I was there, an "underground" support group who called themselves "Baylor Freedom" began holding meetings in undisclosed locations. There was at least a year of controversy over this in the school newspaper, in campus discussions and assemblies, and even in some classes.
I think it is only natural, given that it is a very large, yet very conservative Baptist university. I don't even think the bias comes from the top down, but is rather something that seems to permeate a very homogenous student body of over-priveledged and somewhat sheltered church kids, getting away from home, many of them, for the first time.
This is a ironic question, because you would think that biases would not exist on a college campus. College is a time where people should be open to learning new things and also a place of enlightenment, where there is a conviction that all people are created equal. What is true in theory is not always true in practice. Let me offer two examples of bias on the college campus.
When my wife was a student at one of the ivy league schools, her professor assumed that her partner did all the work in the lab, because her lab partner was a male. The instructor just assumed that women were not scientists. In another instance, that instructor questioned another woman why she wanted to study extra in science. This instructor stated that science was a man's field.
Another example of bias took place on the Yale campus when a number of students thought it would be a good idea to paint their faces black and enact stereotypical actions for Halloween. This incident was written up in the school paper and the point was that racism is alive and well on our college campuses.