I've been politely bothering Sharon to be a guest on Principally Speaking for awhile and we were finally able to connect.  Sharon is a Special Education Teacher as well as the Technology Director for Eagle Hill Southport School which is located in SW Connecticut.  It's very clear that everything she does at Eagle Hill is centered around helping students and I really appreciated her perspective on teacher leadership.  She's also an expert on using the iPad to assist students with special needs.  Finally, be sure to check out her podcast Learning Differently.  It was great to hear her latest episode with Jeffrey Benson, who was an early guest on Principally Speaking.  
Sharon's Website: The Road to Learning
Sharon's Podcast: Learning Differently
Connect with Sharon on Twitter