"Stop blaming professors"

This study made sense to me. Sure, professors are mostly liberal, but do we really indoctrinate our students and turn them into young communists? In fact, this sociologist, Kyle Dodson of UC Merced, found that students who spend more time with professors are more likely to be moderate, while students who spend more time with each other develop more extreme views.

It makes sense to me because students choose their own friends and clubs to a much greater extent than they choose their professors. Their friends thus tend to be people who have the same beliefs as them and when people who have similar beliefs come together, they tend to encourage each other's beliefs. For more on this, check on Cass Sunstein's book Going to Extremes.

By contrast, students choose professors but not typically because of the professor's beliefs. They choose professors who are good teachers (or entertaining teachers or easy teachers) and then end up being exposed to different political beliefs than their own. And further, when they interact a lot with professors, they (hopefully) start to see how complicated the world is, which also moderates their beliefs. 

So the advice in my book - get to know your professors - pays off in making your political beliefs more moderate. And as we know: "everything in moderation, including moderation".