The Milwaukee School System responded to a court finding of segregation by structuring a program of community involvement to help in the task of planning and implementing school desegregation. The city-wide planning group came to be called the Committee of 100. The central thesis of this paper is that the quality of community involvement is not accidental but is the consequence of purposeful structuring by individuals or groups of individuals. The administration of the Milwaukee Public schools determined that they would provide leadership in structuring involvement by carefully prescribing the planning domain and by so doing, create the probability of acceptable recommendations coming from the involvement groups. The success enjoyed by this volunteer plan to desegregate, is considered to be due to the successful structuring of community involvement combined with the care taken in developing a highly sophisticated student assignment system. Several appendices are included. (Author/AM)