Every public school in the United States has aimed for the same goal over the past decade: that all students be proficient in math and reading by 2014.
But that noble ambition, educators and experts almost universally agree, was never realistic. Now, in the District and many states, goals over the next five years tend to be lower for black, Hispanic and poor children than they are for white and Asian students, and in the District, they tend to be higher at schools in affluent areas than in poor neighborhoods. It’s a policy shift that strikes some parents as a form of prejudice.
http://www.washingtonpost.com/local/education/student-achievement-targets-vary-by-race-income-in-dc-and-many-states/2012/09/18/3b306568-fd13-11e1-8adc-499661afe377_story.html