Hm, I guess I meant more in terms of their involvement with the event at large. As far back as 2007 (
http://web.archive.org/web/20070105191044/http://startupscho...), Startup School was run by YC along with BASES.
My only guess would be since they don't need a venue on Stanford's campus, they don't need help from BASES anymore, but I was just looking for someone to confirm.