This study is an evaluation of the Berkeley Unified Elementary School District, which was completely desegregated using a strategy of two-way, cross-town bussing. It presents documentation for tentative answers to two fundamental questions: (1) what is to be gained by eliminating dual school systems? And, (2) what is the cost to be paid for desegregation? Of all the factors involved, the most important is Berkeley's attention to the politics of change. The conclusion reached from this study is that the cost of massive school desegregation is not nearly so great as its critics have predicted. (Author/DM)