
Average folks and higher education researchers have conflicting views of academia. Average folks believe that most college teachers are tenured professors and that most students are residential students who play ultimate Frisbee on the quad. Higher education researchers have a different view. We know that most teachers are actually part time adjuncts and graduate students. Residential college is for the top of the pool. Most students are part time commuters or community college students. The mistake that people make is that the most visible forms of higher education (e.g., elite research universities and liberal arts schools) are the most common.
This split between folk wisdom and what the experts know is evident in David Purcell’s comment: