James H. Clark (Associate Professor) and several of his graduate students Sun Microsystems, 1982: co-founders Vinod Khosla (M.B.A), Andy Bechtolsheim (PhD) and Scott McNealy (M.B.A) Cisco, 1984: co-founders Leonard Bosack (M.S) and Sandy Lerner (M.S) were in charge of the Stanford Computer Science and the Graduate School of Business computer operations groups, respectively, when the hardware was developed Yahoo!, 1994: co-founders Jerry Yang (B.S, M.S) and David Filo (M.S) Google, 1998: co-founders Larry Page (M.S) and Sergey Brin (M.S) LinkedIn, 2002: co-founders Reid Hoffman (B.S), Konstantin Guericke (B.S, M.S), Eric Lee (B.S), and Alan Liu (B.S) Instagram, 2010: co-founders Kevin Systrom (B.S) and Mike Krieger (B.S) Snapchat, 2011: co-founders Evan Spiegel (B.S), Reggie Brown (B.S) and Bobby Murphy (B.S) Coursera, 2012: co-founders Andrew Ng (Associate Professor) and Daphne Koller (Professor, PhD) Student life Student body Stanford enrolled 6,996 undergraduate and 10,253 graduate students as of the 2019–2020 school year. Women made up 50.4% of undergraduates and 41.5% of graduate students. In the same academic year, the freshman retention rate was 99%. Stanford awarded 1,819 undergraduate degrees, 2,393 master's degrees, 770 doctoral degrees, and 3270 professional degrees in the 2018–2019 school year. The four-year graduation rate for the class of 2017 cohort was 72.9%, and the six-year rate was 94.4%. The relatively low four-year graduation rate is a function of the university's coterminal degree (or "coterm") program, which allows students to earn a master's degree as a 1-to-2-year extension of their undergraduate program. As of 2010, fifteen percent of undergraduates were first-generation students. Dormitories and student housing As of 2013, 89% of undergraduate students lived in on-campus university housing. First-year undergraduates are required to live on campus, and all undergraduates are guaranteed housing for all four undergraduate years. Undergraduates live in 80 different houses, including dormitories, co-ops, row houses, and fraternities and sororities. At Manzanita Park, 118 mobile homes were installed as "temporary" housing from 1969 to 1991, but as of 2015 was the site of newer dorms Castano, Kimball, Lantana, and the Humanities House, completed in 2015. Most student residences are just outside the campus core, within ten minutes (on foot or bike) of most classrooms and libraries. Some are reserved for freshmen, sophomores, or upper-class students and some are open to all four classes. Most residences are co-ed; seven are all-male fraternities, three are all-female sororities, and there is also one all-female non-sorority house, Roth House. In most residences,