<p>When I went to Cal Day, the dean(?) of CNR said that the average was 4.25 years to graduate. I’m not sure if it only applies to CNR or the whole school, but it should be pretty close. A LOT of people were concerned with this issue and kept on asking this question but in different words during the Q & A section. The people that don’t graduate in 4 years are the ones that probably either partied a little too hard during freshman year (one of the current students in the panel confessed doing this) or the things that katalina mentioned above.</p>