Its basically a matter of not improving quickly enough. The were tied with GW and I think ND for 20 last year, and although all of the pertinent stats for wash u increased this year they did not increase as quickly as the schools in the 20-23 spots now. That being said, the dean at wash u is really hopeful to shoot back up into position next year because apparently the class of 2004 had an amazing employment rate that won't be figured into the rankings until next year. Besides, all of the schools in the 20s shuffle around a lot so a couple rankings spots dont really matter over the course of three years.