The purpose of the Meeting Students' Needs in the Multiage Group Environment (MSN) program was to provide an instructional system to meet the needs of elementary school students of differing achievement, age, and grade level who are in the same classroom. The program, for kindergarten through grade six, was characterized by an innovative management system, a procedure for continuous assessment of educational needs and achievement, an emphasis on the development of independent behavior, and the encouragement of parent and community involvement. MSN was evaluated through a procedure that called for the comparison of intended outcomes to actual outcomes. Findings from standardized tests of achievement indicated that students in grades one through four increased their percentile ranks in reading or mathematics or both. Similar gains were not observed for grades five and six. Two project-designed instruments developed to measure independence, self-reliance, and responsibility did not show significant gains, although positive trends were demonstrated. In response to a questionnaire, all teachers reported using some management techniques conducive to the development of independence and self-management in the classroom. (MK)