There is no definitive answer to this question as it largely depends on individual preferences and opinions. Some students may find that Cornell University has the best party scene, while others may prefer the social atmosphere at Dartmouth College. It really varies from person to person. However, there are a few factors that can be considered when trying to determine which Ivy League school is the biggest party school.
One factor to consider is the size of the student body. Larger schools typically have more people attending parties and more opportunities for socializing in general. With this in mind, Cornell University (with a student body of over 20,000) would likely be considered the biggest party school out of all the Ivy League colleges. Another factor to consider is location; schools located in urban areas or near major cities tend to have more nightlife options than those located in rural areas. For example, Columbia University (located in New York City) would likely have more going on after dark than Brown University (located in Providence, Rhode Island).
In addition, some schools are simply known for being party schools regardless of their Ivy League status. Fraternities and sororities play a big role in campus social life at many colleges, and some Greek organizations are better known for their partying reputation than others. Schools like Syracuse University and The Pennsylvania State University often come to mind when thinking about college parties; neither are Ivy League institutions but they both have large Greek systems with a reputation for throwing big parties. So if you're looking for an Ivy League school with a big party scene, these are some factors you may want to keep in mind!