Loyola Marymount University has been ranked among the top schools in the country when it comes to being happy and green.

In the Princeton Review’s annual Best Colleges book, LMU was listed among the top 20 in three categories: Best Library, Happiest Students, and “Their Students Love These Colleges.” The rankings are based on surveys of more than 100,000 students nationwide, according to the publication.

“Each of our 377 best colleges offers outstanding academics,” said Robert Franek, the book’s author and Princeton Review publisher. “Our goal is not to crown one college ‘best’ overall, but to help applicants find and get in to the college best for them.”

“The Best 377 Colleges: 2013 Edition” is the Princeton Review’s flagship college guide and features only the top 15 percent of U.S. and Canadian colleges.

Additionally, the Sierra Club environmental organization placed LMU at 26 in its annual “Cool Schools,” a list of environmentally sound universities. Last year, LMU ranked 95 on the Sierra Club’s list.

The ranking is based on a variety of factors, including sustainable purchasing practices, commitment to renewable energy, and offering sustainability-related courses.