TaxProfBlog has the info here:
- Arizona State (2008)
- Florida (2009)
- George Mason (2011)
- Illinois (2009)
- Michigan (2010)
- Missouri-Columbia (2009)
- North Carolina (2010)
- Ohio State (2010)
- Rutgers (2010)
- SUNY-Buffalo (2010)
- Texas (2010)
- Texas Tech (2010)
- Virginia (2010)
- William & Mary (2011)
- Wisconsin (2009)