This is a fourth in a series of reports concerning the progress of the busing program in District Four, Chicago, Illinois, covering the school year of September 1970-June 1971. The four purposes of the plan as originally stated are as follows: (1) to relieve serious overcrowding at the May and Spencer Schools; (2) to promote stabilization through the Austin Area; (3) to increase desegregation in District Four; and, (4) to improve the educational experiences of all children. It has been found that black pupils integrated into classes with white pupils have achieved at a higher level academically than do their counterparts who remain in the segregated schools. White pupils did not suffer any loss in academic achievement as a result of the busing program. Principals and teachers in schools receiving black pupils believe that the busing program has demonstrated positive educational results. White children from segregated white classes have gained in achievement at a normal rate after the busing program (integration) has been effected. Black children continued to gain (academically) at a lower rate of achievement in segregated black classes when they remained in such classes. (Author/JM)