Carnegie Educational Institution Classification

This system is used to classify colleges and universities into some thirty plus categories based on student population, degree type, and broad area of study. There is a PDF flowchart that explains the classifications: [PDF] http://carnegieclassifications.iu.edu/downloads/CCIHE2015-Fl...

I came across this on The Research and Education Networking Information Sharing and Analysis Center (REN-ISAC)'s site as a method of calculating membership fees as a function of institution size. https://www.ren-isac.net/membership/fees.html