<p>Yes they can! GASH (the graduate student team) had a rather loud presence last year at some of the events.
Here’s some more info on them. [Scav</a> Hunt Valhalla (UChiBLOGo)](<a href=“http://uchiblogo.uchicago.edu/archives/2009/05/scav_hunt_valha.html]Scav”>Scav Hunt Valhalla (UChiBLOGo))</p>
<p>And here’s their Youtube channel: [GASH</a> Scav 2011 - YouTube](<a href=“http://www.youtube.com/playlist?list=PLE3CFE3A0A5386637]GASH”>GASH Scav 2011 - YouTube)</p>
<p>And yes they can. I have been in numerous undergraduate classes (including one in compsci last quarter) with grad students.</p>