The Colorado School of Mines (informally Mines) is a public research university in Golden, Colorado, founded in 1874. The school offers both undergraduate and graduate degrees in engineering, science, and mathematics, with a focus on energy and the environment. While Mines does offer minor degrees in the humanities, arts, and social sciences, it only offers major degrees in STEM fields, with the exception of economics. In the Fall 2019 semester, the school had 6,607 students enrolled, with 5,155 in an undergraduate program and 1,452 in a graduate program. The school has been co-educational since its founding, however, enrollment remains predominantly male (69.2% as of Fall 2020). In every QS World University Ranking from 2016 to 2020, the university was ranked as the top institution in the world for mineral and mining engineering. It is classified among “R1: Doctoral Universities – Very high research activity”.