You can access several calendars and updates from previous years below. While you are in a previous version, note that "Return to Current Calendar...please click here" should take you back to the newest calendar.
2011-2012
Final 2011-2012 Calendar (includes Summary of Changes)
2010-2011
Final 2010-2011 Calendar (includes Summary of Changes)
2009-2010
Final 2009-2010 Calendar (includes Summary of Changes)