<p>Unfortunately, most Common Data Sets indicate retention / graduation rates for the whole university not for individual schools within.</p>
<p>I think what one is seeing at Berkeley is a combination of kids taking time off (only 48% of students there graduate withn 4 years, although 6 year graduation rates climb to around 85%) and others switching to non-engineering majors.</p>
<p>The National Science Foundation gave a presentation highlighting the problem of students switching out from Engineering majors especially among women:</p>
<p>Only 54% of High School students planning on engineering had earned more than 10 credits (presumably in engineering) compared with 23% of women.</p>
<p>Most common reasons given for switching to another major from an engineering major: poor teaching, choice of engineering wrong, poor advising, lost interest, better education in other fields, curriculum overload.</p>
<p><a href="http://www.ecedha.org/2002-03/annual_pres/Varadan.ppt#769,20,Slide%2020%5B/url%5D">http://www.ecedha.org/2002-03/annual_pres/Varadan.ppt#769,20,Slide%2020</a></p>
<p>As far as statistics from Northwestern that Alexandre didn't have, you can put a picture together from statistics from their office of the Registrar:</p>
<p>New students enrolling in engineering 317-342 (depending on year) (this is out of a pool of 1915 Freshman and 141 transfers)
<a href="http://www.registrar.northwestern.edu/statistics//compar/2004-2003_comparitive.pdf%5B/url%5D">http://www.registrar.northwestern.edu/statistics//compar/2004-2003_comparitive.pdf</a></p>
<p>366 bachelor degrees awarded throughout year
<a href="http://www.registrar.northwestern.edu/statistics//degr_awd/2003_04degrees.pdf%5B/url%5D">http://www.registrar.northwestern.edu/statistics//degr_awd/2003_04degrees.pdf</a></p>
<p>Obviously, some are taking more than 4 years to graduate since total enrollment in the school of engineering was between 1320-1395 which is greater than the combined enrollment of four freshman engineering cohorts.</p>
<p>I believe Northwestern must do fairly well in retention since around 90% of females in engineering will graduate:</p>
<p><a href="http://www.northwestern.edu/univ-relations/media_relations/releases/feb2001/careerdayforgirls_text.html%5B/url%5D">http://www.northwestern.edu/univ-relations/media_relations/releases/feb2001/careerdayforgirls_text.html</a></p>