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<p>I am not RML, but let me try:</p>
<p>4 (or 6 or whatever) yr graduation rates are basically a function of socioeconomic homogeneity/diversity. The more financial hardships a student body faces, the less likely they are going to graduate on time.</p>
<p>Coupled with the fact that the UC’s have “impacted” majors which don’t always allow for class availability, it’s a wonder that some UC students graduate at all.</p>