Bookmark this page!  Mercer Island SD September 09, 2010 There are no messages posted at this time.   www.misd.k12.wa.us/ Mercer Island School District www.misd.k12.wa.us/news/districtnews/emergency.html Emergency School Operation Schedule   Mercer Island SD School Buildings Mercer Island SD General Notifications Mercer Island High School Islander Middle School West Mercer Elementary Island Park Elementary Lakeridge Elementary test school   A service of Puget Sound Educational Service District.