High School graduation rates for the 2015-2016 school year by county for the state of Michigan. Data Driven Detroit obtained these datasets from MI School Data, for the State of the Detroit Child tool in July 2017. Graduation rates were originally obtained on a school level and aggregated to tract by Data Driven Detroit. The graduation rates were calculated by Data Driven Detroit, using the count of students per cohort per school divided by the count of students who graduated.Click here for metadata (descriptions of the fields).