Any of the UC schools- LA, Berkeley, Davis, San Francisco, San Diego, etc.
If you are Out-of-state, it's better to aim for 3.95-4.0 for UCLA, berkeley for a higher chance of acceptance; for other campuses, if you're applying to competitive majors, i think you should aim for at least 3.8 ; but if you're not applying to competitive courses, then 3.5 could work too. But bear in mind that each year the competition gets worse, more people have higher grades, and so you might want to aim for higher GPA to stand a good chance of getting in a good college. But I think if you're fine with going to a UC that isn't really popular, then you don't have to aim for 3.8 if it is too much for you. Generally, work for a GPA as high as you can, so that you won't regret in the future, when you apply to college.
If you are from california, see this: As a public institution, the UC system prioritizes admissions for the state's top students. Every in-state applicant in the top 9% of California high school graduates is guaranteed a spot at a UC — though it may not be at a preferred campus or even one they applied to.
I think for a tough school like that I would say the minimum should be 3.8, I think that's a GPA that gets you a great chance.
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