<p>The issue is not alone a D but also whether the course is needed for you to meet an A-G course requirement, in which case a D can prevent admission to any UC unless rectified in another way. (Go here and start exploring the UC requirements [A-G</a> courses | UC Admissions](<a href=“http://admission.universityofcalifornia.edu/freshman/requirements/a-g-requirements/index.html]A-G”>http://admission.universityofcalifornia.edu/freshman/requirements/a-g-requirements/index.html) ). You need 3 years of high school math (the C course requirement from the A-G courses) with grades of C or better to meet the math requirement. However, that three years can include high school level courses (e.g., algebra, geometry) taken in junior high. I suspect that since the course you have is calculus, you may have already met the three year requirement with C’s or better in prior math courses you have taken. One can also meet the entire math requirement by scoring 570 or better in the math 1 SAT subject test or 480 or better in the math 2.</p>
<p>These rules are simply ones that go towards determining whether you qualify for admission to “a” UC, not necessarily one of your choice. If you meet the minimums required for admission (see, e.g., [University</a> of California - Statewide path](<a href=“http://admission.universityofcalifornia.edu/freshman/california-residents/admissions-index/index.html]University”>http://admission.universityofcalifornia.edu/freshman/california-residents/admissions-index/index.html) ), you will be admitted to “a” UC, often Riverside or Merced, but that D can be used against you for admission to other UCs, such as Berkeley, UCSD or UCLA.</p>