Scholars Mount Large-Scale Effort to Study Affirmative Action's Effects—Bad and Good

A national consortium of about 30 professors and graduate students has been quietly gathering student data from colleges and law schools to examine the effect of affirmative-action policies on their intended beneficiaries.

The principal investigator heading up the effort is Richard H. Sander, a professor of law at the University of California at Los Angeles. He stirred controversy as the author of a 2004 study concluding that the use of racial preferences by law schools hurts