In the Detroit public school district, 96 percent of eighth graders are not proficient in mathematics and 93 percent are not proficient in reading.

That is according to the results of the 2015 National Assessment of Educational Progress tests published by the Department of Education’s National Center for Educational Statistics.

Only 4 percent of Detroit public school eighth graders are proficient or better in math and only 7 percent in reading. This is despite the fact that in the 2011-2012 school year—the latest for which the Department of Education has reported the financial data—the Detroit public schools had “total expenditures” of $18,361 per student and “current expenditures” of $13,330 per student.
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http://www.thegatewaypundit.com/2015/10/another-democrat-success-story-over-90-of-detroit-kids-not-proficient-in-reading-math/

The Democrat target is 100% not proficient, so 93% and 96% not proficient is a pretty good, if qualified success.