(AREA) -- Fifty-four Michigan public school districts and charters were named 2013 Academic State Champions. Winners represented the top 10 percent of districts and charters in a database created by Bridge Magazine and Public Sector Consultants that used test scores and socioeconomic status to determine which schools are exceeding expectations. Out of 540 schools, Cass City Schools ranked 23rd. Other local districts in the top 100 included Croswell-Lexington at 54, Brown City at 78, Deckerville at 84, Kingston 85th, Bad Axe 87th and Harbor Beach at 92. The rankings are based on three years of MEAP data for fourth and eighth grades in reading and mathematics, as well as additional 11th grade test data from the Michigan Merit Exam. Only school systems offering classes through 12th grade were included in the rankings.