<p>I think just the opposite/ large schools have much deeper benches with many depts in the range of 30-50+ full-time profs plus access to an army of senior grad students and post-docs not to mention adjuncts who live around large universities. Much easier to find somebody to teach extra sections as needed. Many LACs have none of the above if they are in the typical smaller town. Also easier to add a section with demand from another 30 students to one with 5 extra students.</p>