"The Carnegie Classification™ has been the leading framework for recognizing and describing institutional diversity in U.S. higher education for the past four decades. Starting in 1970, the Carnegie Commission on Higher Education developed a classification of colleges and universities to support its program of research and policy analysis. Derived from empirical data on colleges and universities, the Carnegie Classification was originally published in 1973, and subsequently updated in 1976, 1987, 1994, 2000, 2005, and 2010 to reflect changes among colleges and universities. This framework has been widely used in the study of higher education, both as a way to represent and control for institutional differences, and also in the design of research studies to ensure adequate representation of sampled institutions, students, or faculty. To ensure continuity of the classification framework and to allow comparison across years, the 2010 Classification update retains the same structure of six parallel classifications, initially adopted in 2005. They are as follows: Basic Classification (the traditional Carnegie Classification Framework), Undergraduate and Graduate Instructional Program classifications, Enrollment Profile and Undergraduate Profile classifications, and Size & Setting classification. These classifications provide different lenses through which to view U.S. colleges and universities, offering researchers greater analytic flexibility. These classifications were updated using the most recent national data available as of 2010, and collectively they depict the most current landscape of U.S. colleges and universities."