This USA Today article reports this: "An obscure trial challenging New York state rules requiring teachers to pass competency tests wrapped up testimony in a federal court in New York City last month. More than 3,300 black and Latino teachers sued the state, saying their careers were derailed after they flunked certification exams."
"To the teachers, the issue is about fairness. They claim the tests for basic math and literacy skills have nothing to do with their performance in the classroom. And they say because minority teachers failed at far higher rates than whites, the tests were biased."