Ah...I won't say that Hillsdale College (~1,450 students, private, conservative, founded by Baptists, very rural) is bad, but it's not exactly Notre Dame or Stanford. They're just plugging some free on-line lectures. And his fiction writing (however well-known) clearly gets bottom billing in the list of lecture subjects.

Just based on the linked article, I really doubt that the quality of Narnia's world-building is on Hillsdale's priority list.