How can I compare my chances of admission to UIUC and Purdue for computer science?

For most applicants, UIUC computer science should be treated as the less predictable and more difficult admission outcome, while Purdue CS is still highly selective rather than a safety. Both programs admit students directly into a specific CS pathway, so a strong overall application does not guarantee that the major will have room. Compare yourself to each school’s recent admitted-student profile only as a rough benchmark, then put more weight on course rigor, math preparation, and evidence that your interest in computing is sustained.

At UIUC, CS in the Grainger College of Engineering is evaluated in the context of an especially intense applicant pool. Your transcript matters most: advanced math through calculus when available, rigorous lab sciences, and strong performance in the hardest courses your school offers are important signals. UIUC also gives meaningful attention to its short responses, so use them to show specific intellectual interests, projects, research, programming work, or problems you want to explore, rather than simply saying you enjoy technology.

Purdue’s computer science program is housed in the College of Science, which can make the application read slightly differently from an engineering-focused application. It still values high-level math, but clear evidence of analytical thinking can come from coursework, coding projects, competitions, employment, tutoring, or a sustained activity outside school.

For each school, separate your profile into three questions: Are your grades and course rigor near the top of your school context? Do your test scores, if submitted, strengthen rather than merely match your academic record? And do your activities show depth in computing or problem-solving instead of a long but disconnected list? If the answers are mostly yes, Purdue may be a plausible reach and UIUC CS a higher reach; if your preparation is less advanced, both should be considered reaches.