Hugh Pickens DOT Com writes "We all know the stereotype about tenured college professors: great researchers, lazy teachers. Now Jordan Weissmann writes in the Atlantic that a new study confirms the conventional knowlege that faculty who aren't on the tenure-track appear to do a better job at teaching freshmen undergraduates in their introductory courses than their tenured/tenure-track peers. “Our results provide evidence that the rise of full-time designated teachers at U.S. colleges and universities may be less of a cause for alarm than some people think, and indeed, may actually be educationally beneficial." Using the transcripts of Northwestern freshmen from 2001 through 2008, the research team focused on two factors: inspiration and preparation. The team began by asking if taking a class from a tenure or tenure-track professor in their first term later made students more likely to pursue additional courses in that field. That's the inspiration part. Next the researchers wanted to know if students who took their first course in a field from a tenure or tenure-track professor got better grades when they pursued more advanced coursework. That's the preparation part. Controlling for certain student characteristics, freshmen were actually about 7 percentage points more likely to take a second course in a given field if their first class was taught by an adjunct or non-tenure professor and they also tended to get higher grades in those future courses. The pattern held "for all subjects, regardless of grading standards or the qualifications of the students the subjects attracted" from English to Engineering. The defining trend among college faculties during the past 20 years or so (40, if you really want to stretch back) has been the rise of the adjuncts. "That said, there is something appealingly intuitive in these results," concludes Weissmann. "Professionals who are paid entirely to teach, in fact, make for better teachers. Makes sense, right?""