Dozois' taught at Clarion West four times. Many other editors in the field are involved in the Clarion workshops. Van Gelder's Clarion West year was '87. He made an appearance in East Lansing in '91, and returns to Seattle to teach in '99. When I asked him why anyone who'd been through this once would want a repeat, he wasn't quite sure.
Graduates tend to move here.
I'm not sure this is the sort of thing that bothers groups like Lesser Seattle, but over 15 years a definite accretion has occurred. The average influx is one or two per year. My class blew the curve by creating six new Seattleites. The Clarion West community nurtures the workshop, and the workshop nurtures the Clarion West community. It's all around you.