The 2010 Milwaukee Irish Fest Summer School has instructor and registration info available online: http://www.irishfest.com/schools/summerschool.php
The school takes place August 16-20, 2010.
For whistle this year:
Beginning whistle: Brett Lipshutz
Intermediate/Advanced whistle: Joanie Madden
Wednesday evening whistle workshop: Eamonn DeBarra
Also available: The Jim Schuster Music Scholarship for Summer School students between 12-21 years of age: http://www.irishfest.com/pdf/summerschool-SchusterScholarship.pdf