The Yale Graduate School of Arts and Sciences is the graduate school of Yale University, a private Ivy League research university in New Haven, Connecticut, United States. Founded in 1847, it is the oldest graduate school in North America, and was the first North American graduate school to confer a Doctor of Philosophy (Ph.D.) degree. The Graduate School is one of twelve constituent schools of Yale University and the only one that awards the degrees of Doctor of Philosophy, Master of Philosophy, Master of Arts, Master of Science, and Master of Engineering. While doctoral programs are also available in five of Yale's professional schools, students are enrolled through the graduate school, which confers their degrees. The school is administered in four divisions—Humanities, Social Sciences, and Biological and Physical Sciences—and its faculty are divided into 52 departments and programs. Nineteen of these programs terminate with the master's degree. The Graduate School enrolls approximately 2,800 students, one-third of whom come from outside the United States. Approximately 900 faculty are involved with the graduate students as teachers, mentors, and advisors. Most of these faculty also teach in Yale College, the undergraduate school of the university. Source: Wikipedia (en)