Interestingly enough, I had some time to kill today and looked up the medal winning history (not necessarily their first Olympics) for the PAC schools:
USC has 258 medal winners since the 1912 Stockholm Games (unknown if all were student athletes).
http://en.wikipedia.org/wiki/USC_Trojans
UCLA lists 230 medal winners since the 1936 Berlin Games (but as far as I can tell, coaches/future coaches are mixed in :fragez
.
http://www.uclabruins.com/sports/olympics/spec-rel/all-time-olympians.html
Standford has 223 medal winners since the 1912 Stockholm Games (all appear to be student athletes).
http://www.gostanford.com/sports/olympics/alltime.html
Cal has 159 medal winners since the 1920 Antwerp Games (all appear to be student athletes).
http://www.calbears.com/sports/olympics/spec-rel/medal-winners.html
Arizona has 65 medal winners since the 1952 Helsinki Games (all appear to be student athletes).
http://www.arizonawildcats.com/trads/ariz-olympians.html
Arizona State has 57 medal winners since the 1952 Helsinki Games (all appear to be student athletes).
http://www.thesundevils.com/sports/olympics/spec-rel/asu-trads-olympians-medals.html
Oregon State has 18 medal winners since the 1908 London Games (all appear to be student athletes)
http://www.osubeavers.com/ot/olympians.html
Colorado has 11 medal winners since the 1952 Helsinki Games (all appear to be student athletes)
http://www.cualum.org/olympians/
Can't find anything else solid enough on the rest of the PAC's Olympic history to post here. UW and Oregon are especially annoying to search.