Gary Plano One of the many highlights of our visit to the US was the opportunity to spend some time with Gary Plano Superintendent of Mercer Island School District and elected School Board member Lisa Strauch Eggers. Mercer Island sits in the middle of Lake Washington - a 6 square mile suburban community 10 minutes drive from downtown Seattle. According to Gary, Mercer Island is the home of 'the most expensive dirt in Washington State'. It would therefore not surprise you to find that  in terms of attainment it.