From my previous research, I found, besides tuition, college costs are combined by many other expenses, like room, board and supplies. Before I solve this challenge, I need to know all the possibilities. I am thinking if there are all factors caused the high cost in college. Is there any deeper cause? So I was searching some answers in Quora. Here is one answer that I never thought before. ( https://www.quora.com/How-can-we-lower-the-cost-of-college) The author said that college tuitions are paying more for administration than for teaching. It is the same problem in public education system. Part of budget is to running colleges instead of teaching. And many colleges have more administrators and staffers than instructors and professors. So some of budgets have to be paid for these people. Also many faculty are part-time and majority administrators and staffers are full-time.
Here is a reference posted by the author “Between 1975 and 2005, total spending by American higher educational institutions, stated in constant dollars, tripled, to more than $325 billion per year. Over the same period, the faculty-to-student ratio has remained fairly constant, at approximately fifteen or sixteen students per instructor. One thing that has changed, dramatically, is the administrator-per-student ratio. In 1975, colleges employed one administrator for every eighty-four students and one professional staffer—admissions officers, information technology specialists, and the like—for every fifty students. By 2005, the administrator-to-student ratio had dropped to one administrator for every sixty-eight students while the ratio of professional staffers had dropped to one for every twenty-one students."
This finding let me remember that one of schools in my university has many part-time faculties who are also working in companies or running startups. But this school requires higher tuition than any school. Besides tuition issue, if a faculty running a company at the same time teaches course in university, how much energy she or he has to devote to learning? And how long they will spend on preparing teaching materials?