The study looked at why colleges hire part-time faculty. They used data from colleges and individual faculty members to see how factors like school type, student numbers, and money affect part-time hiring. Private schools tend to hire more part-time faculty than public schools. Schools with more part-time students and tuition money also hire more part-time faculty. Schools with limited resources and high full-time salaries also hire more part-time faculty. This shows that colleges use part-time faculty to save money and manage resources.