According to his management company, "Glenn Beck travels from New York, New York and requires Private Jet." Bringing him out must not have been cheap (speaking fee plus travel costs on a private jet), and it makes sense that he would cut the school a break through an in-kind donation.
Beck dining with students (Source: GWU)
"'Quite honestly, the first thing that attracted me was that to graduate you have to know all of the principles behind The Five Thousand Year Leap,' Beck said." Indeed, incoming freshmen are required to read this book before any other.