Academic Bias

After learning about bias in my English class, especially about academic bias, I learned that there is no way we can stop this. Everyone is biased no matter what it comes to. A teacher can choose to teach over a certain subject more rather than a subject he/she may not want the student to know about. Everyone needs to hear both sides of the story and although the teachers do this, they still emphasis more on the side that they support. I don't think they can really be called out about it unless they are only talking about their subject and not allowing any more variety or opposing sides to it. This needs to be changed because everyone needs to hear both sides of an argument in order to choose which side they are for or against.