Harvard - Hardest part is getting in. Once in, graduation is guaranteed unless one goes out of their way to tick off the Profs. Good mix of intellectualism and fun from oncampus ECs and parties on and especially on other Boston-area campuses. Final Clubs exist…but were regarded by most students as bastions for fellow travelers of the ossified old WASP establishment which used to dominate it and other Ivies/peer elites in the past. Supportive environment for the most part even for those from lower SES. In fact, there was a very egalitarian vibe among Harvard undergrad/grad students from many visits there.
Yale - Same as Harvard in most respects with the exception of location being in what some Yale undergrads I knew considered “a dump” and gothic architecture. Secret societies similar to Final Clubs…but seemingly more dominant than at Harvard.
Princeton - Most conservative Ivy in terms of student culture and admissions dominated by legacy/athlete/boarding school grads until recently, very wealthy area, beautiful campus, not very diverse*, very friendly helpful undergrads with one notable exception, LAC environment, academics like HY and peer elites with the exception of a required senior thesis, strong engineering, student culture not very nerd friendly in the past judging by some older alums who were engineering/CS majors there.
MIT - Officially no legacy admissions, supersmart genius types nerds proudly dominate, STEM centered with many topflight non-STEM departments, very intense academics, work exceedingly hard/play hard, best parties in the Boston area, very little sleep to the point caffeine related products like jolt are exceedingly popular, ballroom dance classes in January, very creative pranks against HY rivals(aka Hacks), many students regard the school further down Mass Ave as a fancy finishing school just to tick their H student counterparts off for their own amusement.
Brown - No distribution requirements/core curriculum, failing grades lower than a C aren’t recorded on transcript***, no plus/minus grades, most radically progressive/hippieish college among the Ivies. Kinda like Antioch, Oberlin or pre-'90s Berkeley…but more genteel and far less radical.
Dartmouth - Second most conservative Ivy in terms of student culture, strong Greek system, very sporty/rah rah high school spirit vibe(Was known as the “jock Ivy” by older D alums and HS classmates clamoring to go there), LAC-like campus, 10 week quarters, D plan.
Columbia - Core Curriculum, Philolexian society, small undergrad populations, feel of large university due to large grad population and large bureaucracy, Alexander Hamilton, Morningside Heights/Harlem, pre-professional…especially towards ibanks/wallstreet/finance, some partying…though many undergrads feel NYU has better parties for some reason, Barnard’s(aka “Barnyard” to some Columbia undergrads and older alums) next door and is practically part of the university despite separate admissions/campus, large undergrad and sometimes even grad classes****, Low and Butler Library buildings being across the campus from each other, strong association with IR due to SIPA, strong engineering school, etc.
Cornell - Pre-meds seemingly dominate A & S, strong engineering, hotel school, some association with SUNY and easier in-state admissions through Ag school, parties and some dubious pastimes like cowtipping, academically intense,
Penn - Frequently mistaken for Penn State, Wharton, Ben Franklin, very pre-professional, undergrad experience can leave one feeling like being treated like a number according to several alums, West Philly, not too far from Drexel, lots of parties, the Yuge one, etc,
Caltech - Academically intense, even more STEM-centered than MIT or CMU, very quirky, supersmart/genius types dominate here, nerds proudly dominate, smaller than many LACs, etc.
Stanford - Topflight academics across the board(Not just engineering/CS) combined with strong rah rah Div I sports, strong rivalry with Berkeley, complaining/talking about working hard academically not considered cool, 10 week quarters, Taco Bell architecture, Chelsea Clinton, etc,
- Based on remarks from URM Princeton alums who were older HS classmates and my own observations of the Princeton campus early last year.
** Up until 2004, Oberlin had the same grading policy which was modeled on Brown.
*** One popular grad “seminar” I sat in on had an excessively large official enrollment of over 50 grad students. Ended up devolving into a practical lecture course due to logistical constraints of having so many students.