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Among the Princeton Review's greenest colleges in the U.S. were Lewis and Clark College, Green Mountain College and the University of California, Santa Barbara. Reuters

If you're going green and going to college, look no further. The Princeton Review on Thursday released the 2015 edition of its "Guide to 353 Green Colleges," which ranks schools on how environmentally friendly they are, a news release said. Lewis and Clark College in Portland, Oregon, came in at No. 1, followed by Green Mountain College in Poultney, Vermont, and the University of California's Santa Barbara campus.

While the green colleges were scattered all over the country, institutions in states like California, Washington and Vermont dominated the top 50. Only two Ivy League schools -- Columbia University and Cornell University -- made that list. Stanford University came in at No. 22, and the University of North Carolina at Chapel Hill was No. 31.

In ranking them, the Princeton Review measured how green each school's policies were, whether students there had a sustainable lifestyle and whether a school was teaching students to live in an environmentally conscious society. Other factors included how much each institution spent on locally sourced food, whether it tried to divert waste and if it had a full-time sustainability officer.

The Princeton Review's top 50 list largely did not match up with related rankings from the Environmental Protection Agency from earlier this year. The EPA had named the University of Pennsylvania, Georgetown University and the University of Oklahoma as the top green power users, but none of those three appeared on the Greenest Colleges list.

Take a look at the top 15 green schools as ranked by the Princeton Review below:

  1. Lewis and Clark College in Portland, Oregon
  2. Green Mountain College in Poultney, Vermont
  3. University of California, Santa Barbara in Santa Barbara, California
  4. State University of New York at Stony Brook in Stony Brook, New York
  5. Dickinson College in Carlisle, Pennsylvania
  6. Cornell University in Ithaca, New York
  7. American University in Washington
  8. College of the Atlantic in Bar Harbor, Maine
  9. Middlebury College in Middlebury, Vermont
  10. University of Vermont in Burlington, Vermont
  11. Portland State University in Portland, Oregon
  12. Colorado State University in Fort Collins, Colorado
  13. Willamette University in Salem, Oregon
  14. University of Washington in Seattle
  15. Pomona College in Claremont, California