Two professors, one from Harvard and one from Boston University, will issue a report next Saturday evaluating the impact of "Operation Exodus" on racial imbalance problems in Boston's schools.

The professors--whose names were not revealed--will discuss the Roxbury group's busing program and its effect on the 500 Negro students who are being brought to predominantly white schools in other sections of Boston.

The impending report was revealed by Mrs. Ellen Jackson, chairman of Operation Exodus, at a press conference yesterday. They also presented a three-year plan for correcting Boston's racial imbalance and upgrading its schools.

In addition to increased busing of Negro students, the plan calls for a special training program in human relations, education for teachers and supervisors in Negro communities, and the creation of a task force of education experts who would study and recommend ways of improving Boston's schools.

Mrs. Jackson said that she expected Boston area universities would cooperate in these programs. However, she said that it would be up to the Boston School Committee to implement the group's proposals and contact the universities.

The plan also calls for the construction of campus-type schools that would draw students from the Boston metropolitan area.

The Exodus program was issued in response to the School Committee's decision Thursday to maintain its ban on public busing to relieve racial imbalance. Some $4 million in state aid to Boston's school system is being withheld by the State Board of Education until the School Committee presents a "satisfactory" imbalance plan.