<p>[University</a> of California - Admission requirements](<a href=“http://admission.universityofcalifornia.edu/freshman/requirements/index.html]University”>http://admission.universityofcalifornia.edu/freshman/requirements/index.html) <— 2 years will do for Berkeley. I’d say that’s a good rule to follow for most engineering schools, although I took three to be safe.</p>