I'm blown away that this school hasn't filled up yet. The list of instructors is awesome. With my limited math skills it appears as though it will be one instructor per 2 drivers. It is held by the KCBMW club. I have supplied a link to the KC forum where locals are talking about it and a link to the official registration page. You do have to be a BMW club member, but they welcome all makes. That then allows you to do any BMW event (driving schools, track days, autox schools) for the next year.
There is a regularly scheduled KCRSCCA event the next day if you want to spend the night and make a weekend out of it.
Link to forum http://mokanmotorsports.com/forums/viewtopic.php?t=2946
Link to motorsports.reg for sign up http://www.motorsportreg.com/calendar/event.cfm?uidEvent=34375118-0F90-E9A6-F437F91D76AB9166