<p>What departments?</p>
<p>UC Berkeley humanities and social sciences, though not as well known as Berkeley engineering/sciences, can quite easily rival that of private institutions. Actually, I wouldn't say rival as much as emulate and match. The professors are world-renown and within most of those majors (say, philosophy), you have just as much personal attention as you would get in a private school.</p>
<p>Haas business school, and I'll lump economics in here too, beats out pretty much all the Ivys except for Penn's Wharton. Economics at Berkeley ranks as one of the top in the nation, far above most Ivys, trailing mostly behind MIT. I personally avidly researched Cornell's prowess in this sector. If I were to choose schools purely by academics, I could not choose Cornell over Berkeley in business and economics.</p>
<p>Science-oriented majors can expect to, with initiative, find research opportunities in cutting edge science. It is often forgotten that UC Berkeley owns Livermore Laboratories and Los Alamos Labs. Why is that important? The research and in-progresses funnel over to Berkeley, where research is being done as well. Did you hear about the new malaria drug that is at the moment declared to possibly wipe malaria out of existance? It was researched and made in Berkeley.
Not only that, in general Berkeley has never had a problem matching up academically in the applied sciences/engineering against the Ivys.</p>
<p>Finally, if you ever decide to start outside the US... realize that other than Harvard, and in Asia, Columbia, the Ivys are more or less unknown to most people. UC Berkeley holds international renown due to its research, however, and is held in high regard.</p>
<p>I believe you know the downsides to Berkeley as well. The large student body, which is sometimes rather watered down with... questionable admits (though I suppose that is an inescapable fact at any school), impersonal attention, etc. At the same time, there are extremely attractive aspects in other areas, such as the cultural surroundings... food (not a small factor if you've sampled around Berkeley food)... But you asked for purely academics.</p>