This news source was heavily biased in that it presented a small and ignorant viewpoint of the subject, and used people with no gun expertise or experience for reliable news sources.
This news source was heavily biased and slanted in favor of arming teachers. However it is an opinion piece so a bias is to be expected.
This source tended to have no bias and a neutral point of view. It presented both sides of the spectrum and didn't misquote the President.
This source tended to have a liberal bias in that it presented lots of statistics, however it skewed them to fit their bias. The NYtimes also happens to be a more liberal news source.
This source has a centrists view point on gun control. It has no equitable bias for either side on the issue and only presents the facts allowing the user to form their own conclusions.
This source is a left-minded perspective on gun control and the solution to the prevention of school violence. This source tends to be more liberal because it has an anti-gun bias in it.