Location: Philadelphia, Pennsylvania Students: 20,361 Number of students per faculty member: 6.5Location: Zurich, Switzerland Students: 19,233 Number of students per faculty member: 14.6Location: Chicago, Illinois Students: 13,525 Number of students per faculty member: 6.2Location: Kensington, London Students: 15,857 Number of students per faculty member: 11.4Location: Princeton, New Jersey Students: 7,955 Number of students per faculty member: 8.3Location: Cambridge, Massachusetts Students: 29,326 Number of students per faculty member: 8.9Location: Cambridge, Massachusetts Students: 11,177 Number of students per faculty member: 8.7Location: Stanford, California Students: 15,845 Number of students per faculty member: 7.5Location: Pasadena, California Students: 2,209 Number of students per faculty member: 6.5Location: Cambridge, England Students: 18,389 Number of students per faculty member: 10.9Location: Oxford, England Students: 20,409 Number of students per faculty member: 11.2