The city declined to validate the test after it was given, a step that could have identified flaws or determined that there were no serious problems with it. In addition, city officials could not say what was wrong with the test, other than the racially skewed results.

"Fear of litigation alone cannot justify an employer's reliance on race to the detriment of individuals who passed the examinations and qualified for promotions," Justice Anthony Kennedy said in his opinion for the court. He was joined by Chief Justice John Roberts and Justices Samuel Alito, Antonin Scalia and Clarence Thomas.

New Haven was wrong to scrap a promotion exam because no African-Americans and only two Hispanic firefighters were likely to be made lieutenants or captains based on the results, the court said Monday in a 5-4 decision.