<p>But my point, going back to your original question, is to look at what percentage of students take not four years to graduate, but five (or four and a half, which cannot be disaggregated from five based on publicly available data). At SDSU, 29% of the entering freshmen take an extra semester or two to graduate; at Berkeley, 20%. Thats a much smaller difference than just looking at the differences in non-four-year rate, 72% (SDSU) vs. 30% (Berkeley). The data also shows that two-thirds of the non-four-year Berkeley students do graduate in the fifth year, versus 40% of the SDSU students; and that a very large percentage of SDSU freshmen never graduate - at least not in six years or not from SDSU - whereas 9 of 10 Berkeley frosh have their Berkeley diplomas within six.</p>