For 13 years, Sierra has been ranking colleges according to which ones offer the best sustainability-focused courses, eco-friendly cafeteria provisions, and carbon-neutral land and energy policies, as well as the most opportunities to engage with the environmental movement. All two and four-year undergraduate colleges and universities in the United States and Canada are eligible to participate. Scores are based on STARS reports submitted to the Association for the Advancement of Sustainability in Higher Education.

CSU ranked 217 out of 282 participating institutions.

For more information, see the Cool Schools 2019 Full Ranking or the Cool Schools infographic showing where top-performing schools are located, and where they ranked across six major categories.