Most students applying to the University of California check two boxes: UCLA and Berkeley. Then they move on to the rest of their list.
Here is what those two boxes are actually worth, and what four more would cost.
The ladder
The nine undergraduate UC campuses do not sit anywhere near each other in selectivity:
| Campus | Admits |
|---|---|
| UCLA | 9.0% |
| Berkeley | 11.0% |
| San Diego | 26.7% |
| Irvine | 28.6% |
| Santa Barbara | 33.0% |
| Davis | 41.8% |
| Santa Cruz | 65.8% |
| Riverside | 76.4% |
| Merced | 90.5% |
UCLA and Merced differ by a factor of ten. They are on the same application form.
The arithmetic
If you apply only to UCLA and Berkeley, the odds that both say no are 81%.
Add San Diego, Irvine, Santa Barbara and Davis — four more checkboxes on a form you are already completing — and the odds that all six say no fall to about 17%.
That is not a small adjustment. It is the difference between a system that probably rejects you and one that probably does not.
Why this is the cheapest move on your list
Everywhere else on your list, adding a school means another supplement, another set of essays, another portal, another deadline. The UC application does not work that way. One form, one set of personal insight questions, one submission. Campuses are selected inside it.
So the marginal cost of the seventh UC campus is a per-campus fee and a checkbox. The marginal cost of the seventh private school is a weekend.
If you are looking for the single highest-leverage change to a top-heavy list, this is usually it — and it is usually the one students skip, because the UC section feels like it has already been handled once UCLA and Berkeley are ticked.
The honest caveat
These campuses read applications separately, but they read the same application. Your essays, your grades, and your course rigor do not change between UCLA and Davis. That means the outcomes are correlated, and the 17% figure above — which assumes independence — is a floor, not a forecast.
The correlation is probably tighter within the UC system than between unrelated private colleges, precisely because it is one file. Treat the real number as higher than 17%. It is still dramatically better than 81%.
Two things worth knowing before you check boxes
The UCs are test-blind. They do not consider SAT or ACT scores at all, even if you send them. If your list strategy leans on a strong test score, that advantage does not exist here. Your GPA, your course pattern, and your personal insight questions carry the weight.
Campus is not the only variable. Admission rates by major vary substantially inside a campus. A computer science applicant to San Diego is not facing the campus rate. If you are applying to an impacted major, the campus-level number understates the difficulty — sometimes by a lot.
The practical move
Open your UC application and count how many campuses you have selected. If the answer is two, you are leaving the cheapest odds improvement on your entire list unclaimed.
Adding Davis and Santa Barbara costs you a fee and a click. Nothing else on your list is priced that way.
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Source
Acceptance rates are institution-reported figures published through the U.S. Department of Education (IPEDS / College Scorecard), most recent available year. Campus-level rates; major-level rates differ and are not reflected here. Probability figures are multiplication of per-campus rejection rates under an independence assumption, qualified above.