Constantly. I was the chair of an student development team that runs AI Tournaments (http://siggame.io/). We get a constant stream of freshmen and most of them are very new with programming. I don't think our organization would survive if we didn't mentor new people. Since graduating I still mentor people in programming, resume building and other things.
I do have my work cut out for me though since they are usually still students.
I do have my work cut out for me though since they are usually still students.