* March 29, 1972 -- Parents of black students bring class action suit against Prince George's schools in U.S. District Court, contending that the county did not meet constitutional standards for school desegregation.
* Dec. 29, 1972 -- U.S. District Court Judge Frank A. Kaufman orders implementation of a desegregation plan to be accomplished primarily by student busing.
* Nov. 27, 1974 -- Kaufman provisionally relinquishes jurisdiction over the case, pending further requests to reopen the suit.
* Sept. 1, 1981 -- Plaintiffs request case be reopened, alleging the county still maintained a segregated system.
* Sept. 28, 1981 -- Kaufman grants motion to reopen the case.
* Sept. 20, 1983 -- Kaufman issues new desegregation order, establishing guidelines that no school shall have black enrollment of less than 10% or more than 80%.
* October 1983 -- Board of Education votes to appeal Kaufman's order.
* May 14, 1984 -- Board submits to Kaufman proposal to close 22 schools over two years.
* Aug. 17, 1984 -- Kaufman appoints five-member expert panel headed by Robert L. Green to recommend desegregation plan.
* Jan. 9, 1985 -- Board appeal of Kaufman's 1983 order is heard before U.S. Court of Appeals for the Fourth Circuit.
* March 11, 1985 -- Final Green report is issued.
* March 29, 1985 -- Appeals panel rejects major portion of board's appeal, remanding part of the decision back to Kaufman.