Which is better for computer science: San Diego State University or Purdue University?

For computer science alone, Purdue is the stronger program in overall reputation, depth, and recruiting reach. Purdue is widely known for engineering and technical fields, has a much larger national presence in CS, and tends to offer more advanced coursework, research infrastructure, and employer visibility in software, systems, AI, and related areas. San Diego State can still be a solid option, especially for students who want to stay in Southern California and build toward regional internships, but it is not usually viewed at the same level for CS specifically.

Purdue fits the student who wants a more intense, nationally recognized technical environment. It is the kind of place where you are more likely to find a larger CS community, broader specialization options, and stronger name recognition with employers across the country. For students thinking about competitive internships, graduate school, or wanting access to a deeper bench of faculty and research areas, Purdue usually carries more weight.

San Diego State makes more sense for the student who values location, affordability, and a practical path into the California job market. Being in San Diego can matter if you want easier access to local tech, defense, biotech, or startup-adjacent opportunities during the school year. A motivated student can absolutely do well there, but the school’s CS reputation is more regional than national.

So if your question is strictly which school is more highly regarded for computer science, the answer is Purdue. If closeness to home, cost, and Southern California connections are major factors, SDSU may still be the smarter personal choice, but that is a different question from program strength.