Some of Detroit’s most celebrated selective schools saw their standings plunge on the state’s most recent school rankings.
Renaissance High School was one of the highest ranked schools on Michigan’s 2014 Top to Bottom schools list, scoring in the 98th percentile, better than 98 percent of state schools.
But when the state in January released its latest ranking, based on 2016 test scores, the school had dropped to the 48th percentile, putting it slightly below the state average.
Cass Technical High School dropped 57 percentage points, from the 78th percentile in 2014 to the 21st percentile in 2016. (There was no 2015 list).
And the Bates Academy, a selective elementary school in northwest Detroit, dropped from the 86th percentile in 2014 to the 34th percentile last year.
The nosediving rankings could be alarming to parents and educators, but testing experts say the dramatic swings say more about a rating system that’s been in turmoil in recent years than it does about individual schools.