E. Language Other than English – 2 years required, 3 years recommended

Two years of the same language other than English. Courses should emphasize speaking and understanding, and include instruction in grammar, vocabulary, reading, composition and culture. Courses in languages other than English taken in the seventh and eighth grades may be used to fulfill part of this requirement if your high school accepts them as equivalent to its own courses.

Source: http://www.universityofcalifornia.edu/admissions/undergrad_adm/paths_to_adm/freshman/subject_reqs.html

As part of the UC Subject Requirement, you need to take, at a minimum, two years of the same foreign language. If you have done two years of Latin, you can stop after this year or take one more year of a different language (3 years are recommended, but you can take a different language for the third year). If you only have one year of Latin, you can just take two years of another language.