Found it:
Statewide, Detroit’s spending per pupil is in the 91st percentile and DPS teachers are paid at the 96th percentile. For all that, by almost any measure Detroit schools have for decades failed their students: test scores, safety, drop out rates, etc. For example, Detroit’s public school students perform at the 3rd percentile in the state - that is, they are in the lowest 3 percent, and the district is in its second state takeover in a decade.
Source:
Detroit: The Triumph of Progressive Public Policy
http://www.mackinac.org/10743
Great find!