From the Wisconsin Charter Schools Association:

The 7th annual Wisconsin Charter Schools Conference, co-sponsored by the WCSA and DPI, will be attended by educators, parents, students, school officials, university people, community leaders, state officials, and many other charter friends. Conference Flyer (PDF).
Dates: April 15-17, 2007 (Sunday afternoon through Tuesday)
The Sunday afternoon (4/15) Wisconsin Charter Schools FAIR is open and FREE to the public. Conference sessions on Monday and Tuesday (4/16-17) will focus on planning, authorizing, implementing and operating high-performance charter schools.