But I disagree with the primary reasoning in the article: "when you have an adjunct professor instead of a full-timer, you are getting a substandard education"
Students actually learn more from non-tenured faculty than tenured or tenure track faculty: http://www.insidehighered.com/news/2013/09/09/study-finds-st...
Partly that's due to things like adjuncts may not have research obligations and can focus more on teaching, and also of course those adjuncts who get worse student ratings are not re-hired. Universities should give more job security and more pay to instructors whose main job is teaching instead of research.