... Bank conference on The Contribution of Economics to the Challenges Facedby Education,” Dijon, France, June 2006.James Coleman and others, Equality of Educational Oppor-tunity (Washington, D.C.: ... 2005).Christopher Jencks and Meredith Phillips, editors, The Black-White Test Score Gap (Washington, D.C.: Brookings, 1998).Christopher Jencks and others, Inequality: A Reassessment of the Effect of ... PLAN TO IMPROVE THE QUALITY OF TEACHING IN AMERICAN SCHOOLS 5 the quality of their teachers. School systems thatwant to develop such plans, involving any or all of the components outlined above,...