How should I choose between Harvard and Princeton for computer science?

For computer science, Princeton tends to stand out for students who want a more engineering-style, theory-heavy CS experience in a smaller undergraduate-focused setting. Its CS department is one of the university’s academic centerpieces, undergraduates are very visible in the department, and the senior thesis requirement often leads to substantial independent work. Harvard is an excellent choice for students who want strong CS plus more flexibility to combine it with other fields, especially through its broader ecosystem across Harvard, SEAS, and nearby opportunities in Cambridge and Boston.

Princeton often fits the student who wants a tighter campus community and a more cohesive residential experience. The campus is more self-contained, the undergraduate culture is especially central to university life, and many students like that it feels focused and immersive rather than spread across a city. If you want professors and classmates to feel accessible within a somewhat smaller environment, that can be a real advantage.

Harvard makes more sense for the student who wants range. The surrounding academic environment makes it easy to connect computer science with math, economics, government, biology, linguistics, or entrepreneurship. Being in the Cambridge-Boston area also creates a different rhythm for internships, research connections, and startup exposure during the school year, not just over the summer.

If research access is a major priority, both schools offer strong opportunities, but the experience can feel different. At Princeton, undergraduates are often deeply integrated into faculty-led work and independent projects because the undergraduate focus is so strong. At Harvard, the scale of the research ecosystem is enormous, which is exciting if you are proactive and want to explore across labs, institutes, and neighboring institutions.

For a student who already knows they want a classic, rigorous CS education and likes the idea of a close-knit campus where undergraduate academics are front and center, Princeton is especially compelling. For someone who wants elite CS training while keeping more academic and professional doors open across disciplines and an urban-adjacent environment, Harvard has a distinct edge.