If I remember correctly, this year we started a week earlier than D2s. Next year we will be back to classes on August 7th (after taking a nice break from busting our b**ts for boards), so I'm assuming you'll be starting the week before we get back. Good luck!
If you look at the ASDOH home page, on the right hand side there is a catalog that has the 2005-2006 school year schedule in it with more specific dates. If I can remember we should start around July 24th or 25th.