TL;DR: UIUC and Georgia Tech are both public-flagship computer science powerhouses that admit students directly into the major, and at both, switching into CS after enrolling is barred or tightly controlled. UIUC last published a computer science admit rate of 7.4 percent (2025), against 23.3 percent for Grainger engineering overall in 2026, while Georgia Tech’s College of Computing admits below the institute’s overall rate of about 12.8 percent for fall 2026, which was 28 percent for Georgia residents and 9 percent for everyone else. (University of Illinois Admissions, 2025 and 2026; Georgia Tech Undergraduate Admission, 2026)
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How Do UIUC and Georgia Tech Admit Computer Science Students?
Both universities decide computer science at the point of admission, not after enrollment. UIUC admits directly by major through the Grainger College of Engineering, where the CS program (run through the Siebel School of Computing and Data Science) is among the most competitive in the country. Georgia Tech likewise admits by major into its College of Computing, and a first-year applicant must list computer science as the intended major to be considered for it. The shared consequence is that the major has to be won on the application itself, and a student who is not admitted into CS cannot simply drift into it later. The differences that matter are in the exact odds, the in-state advantage, and how each school handles students who want to switch in after arriving. Testing policies also differ: Illinois is test-optional, while Georgia Tech requires SAT or ACT scores as part of a complete first-year application.
| Feature | UIUC (Grainger / Siebel School) | Georgia Tech (College of Computing) |
|---|---|---|
| Type | Public flagship (Illinois) | Public flagship (Georgia) |
| Admission structure | Direct admit by major | Admit by major |
| Approximate CS admit rate | 7.4 percent for CS (2025, the last year published by major); 23.3 percent Grainger overall (2026) | Below GT’s overall rate (campus about 12.8 percent, fall 2026); steep out-of-state gap |
| In-state versus out-of-state | University rate 38.1 percent overall (2026); Illinois residents admitted at a higher rate | 28 percent for Georgia residents, 9 percent for non-residents (fall 2026); about 52 percent of CS students are from Georgia |
| Switching into CS later | Not permitted on campus; CS minor or CS plus X only | Limited change-of-major applications since April 2025 (58 students switched in the first year) |
| Testing | Test-optional | SAT or ACT required |
| Best fit | Set on CS, drawn to a top Midwest tech pipeline; weigh CS plus X as an alternative | Set on CS and comfortable with by-major odds; Georgia residents favored |
Sources informing this comparison: University of Illinois Admissions and Grainger College of Engineering, Georgia Tech College of Computing, Georgia Tech Office of Undergraduate Admission.
Which Is Harder to Get Into for CS, UIUC or Georgia Tech?
Both are brutally competitive for computer science, and the honest answer is that it depends on residency and on how you read the numbers. UIUC’s computer science major admitted 7.4 percent of first-choice applicants in 2025, the last year Illinois published rates by major, well below the Grainger rate of 21.2 percent that year and 23.3 percent in 2026, which makes CS one of the most selective majors at the university regardless of where an applicant lives (University of Illinois Admissions). Georgia Tech’s College of Computing admits at a rate below the institute’s overall figure, which itself was about 12.8 percent for fall 2026 (8,715 admits from 67,985 applications), and the in-state advantage is pronounced: Georgia residents were admitted at 28 percent against 9 percent for non-residents, and about 52 percent of CS students come from Georgia, so out-of-state applicants compete for a smaller share of seats at much steeper odds (Georgia Tech Undergraduate Admission, 2026; Georgia Tech College of Computing, 2025). For a Georgia resident, Georgia Tech is the more attainable of the two; for an out-of-state applicant, both are high reaches, and UIUC’s 7.4 percent CS rate and Georgia Tech’s out-of-state squeeze leave little daylight between them.
The headline university acceptance rates are misleading for exactly this reason: they average together very different competitions. Families should look past the campus-wide number to the CS-specific and residency-specific odds. Our Georgia Tech acceptance rate analysis and our UIUC Grainger guide lay out those splits in detail.
UIUC or Georgia Tech: Which Should You Apply To?
Because both are direct-admit programs where the major is decided up front, the application strategy is similar: list computer science as the genuine first choice, build a profile that demonstrates real computational depth, and line up a credible alternative rather than assuming a later switch. The deciding factors are usually residency and program culture. A Georgia resident gets a substantial edge at Georgia Tech and should treat it as a strong target; an Illinois resident gets a meaningful edge at UIUC. For an out-of-state applicant choosing between them, UIUC offers the CS plus X pathway, which pairs computer science with a second field through a different college and can be a smart alternative when the straight CS major is a reach, while Georgia Tech offers a controlled process to change into CS after enrolling, though it remains competitive and should not be treated as a backup. Both feed directly into elite technology employers, so the choice should turn on fit, cost, and odds rather than prestige. For the broader framework, see our guide to computer science admissions structures and our ranking of the best colleges for computer science.
Can You Switch Into CS Later at UIUC or Georgia Tech?
This is where the two diverge most clearly. UIUC has effectively closed the door: students can enter the computer science major only as new first-years or transfers, and changing majors into CS once on campus is not permitted, though a student can pursue a CS minor or one of the CS plus X interdisciplinary majors instead. Georgia Tech is slightly more open but still tightly managed, having updated its change-of-major process in April 2025 so that current students can apply to move into CS on a limited basis; 58 students changed into CS through the new process in its first year. In both cases the message to families is the same: do not enroll in a different major expecting to slide into computer science later. The reliable path at either school is direct admission to CS from the start, backed by a real alternative plan for the very likely scenario of not getting in.
Frequently Asked Questions About UIUC and Georgia Tech Computer Science
It depends on residency. For a Georgia resident, Georgia Tech is more attainable because more than half its computer science class comes from Georgia. For an out-of-state applicant, both are high reaches: UIUC last reported a 7.4 percent CS admit rate, and Georgia Tech admitted 9 percent of non-Georgia applicants overall in fall 2026, with computing admitted below the overall rate.
Yes, substantially. Georgia Tech gives a meaningful edge to in-state applicants, and Georgia residents make up about 52 percent of computer science students, and in fall 2026 Georgia residents were admitted at 28 percent against 9 percent for non-residents. A strong in-state applicant can treat Georgia Tech CS as a realistic target rather than a pure reach.
No. UIUC allows students to enter the CS major only as new first-years or transfer applicants, and changing majors into CS once on campus is not permitted. A student can pursue a CS minor or a CS plus X interdisciplinary major instead, but not the standalone CS major.
Both are worth it for a very strong applicant but should be treated as reaches, and the list should include schools with friendlier structures. UIUC’s CS plus X pathway can be a smart alternative to the straight CS major, while Georgia Tech’s out-of-state computer science odds are among the most competitive for any public university.
CS plus X pairs computer science coursework with a second field, such as linguistics, economics, or astronomy, through a different college. It is a genuine alternative path into UIUC computing that can carry somewhat better odds than the straight CS major, while still delivering a strong computational foundation.
Very. Georgia Tech prioritizes in-state students, so out-of-state applicants compete for a limited share of seats, and computer science is the most requested major. Out-of-state families should treat Georgia Tech CS as a high reach and build the rest of the list accordingly.
Yes. Both are top-ten computer science programs with deep recruiting pipelines into leading technology employers and strong graduate placement. Career outcomes are excellent from either, so the decision should rest on fit, cost, and admission odds rather than reputation.
We weigh residency, academic fit, cost, and the full school list, then position each school as a target or reach and decide whether alternatives like UIUC’s CS plus X belong in the plan. We then build the application to be competitive in the specific direct-admit pool that will evaluate it.
Sources: University of Illinois Office of Undergraduate Admissions, Illinois First-Year Admit Rates, Georgia Tech 2026 First-Year Admitted Profile, Georgia Tech College of Computing 2025 Enrollment Roundup, UIUC Siebel School of Computing and Data Science, Georgia Tech College of Computing, Georgia Tech Office of Undergraduate Admission, NCES College Navigator, Common Data Set Initiative, College Board BigFuture.
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