Over the past decade Purdue University has reduced its in-state student population by 4,300 while adding 5,300 out-of-state and foreign students, who pay triple the tuition.
U.S. colleges spend a startling amount of money on their nonteaching staff. Some of these people are librarians or career or mental-health counselors who directly benefit students, but many others do tangential jobs that may have more to do with attracting students than with learning. Many U.S. colleges employ armies of fund-raisers, athletic staff, lawyers, admissions and financial-aid officers, diversity-and-inclusion managers, building-operations and maintenance staff, security personnel, transportation workers, and food-service workers.
U.S. colleges spend more on nonteaching staff than on teachers
https://www.theatlantic.com/education/archive/2018/09/why-is-college-so-expensive-in-america/569884/