A study was conducted to test a desegregation impact planning model in predominantly black and predominantly white neighborhoods in Milwaukee, Wisconsin. The model tested has seven planning stages, pre-planning through the implementation and revision cycle. The model features feedback loops which permit desegregation planners to get community feedback while the planning cycle is in progress and when its outputs are put into effect. Specifically, the objectives of the study were: (1) to determine if there were differences between blacks and whites in their perception of the impact of certain influences on the desegregation planning process (since the views of planning role actors will be instrumental in determining the components of any desegregation plan); and (2) to observe, while testing the model, whether these neighborhood residents systematically followed the steps outlined in the model. Of the 21 influences tested, all were perceived by respondents to have some influence on the planning cycle and the systems outputs by black and white community desegregation planning role actors. Black and white actors perceived that State and Federal money to defray the cost of school desegregation had the most positive influence. The fears voiced by middle class parents about sending their children to school with lower class minority students was perceived to be the most negative influence. Other statistically significant differences between the perceptions of black and white planners involved: (1) fear of white flight; (2) cooperation from school board members; (3) desire to maintain neighborhood schools; (4) fears for students' safety due to possible racial conflicts in the schools; and (5) having enough accurate information to make desegregation planning successful. Because 94% of the respondents indicated that they went through the steps recommended by the desegregation model while constructing a desegregation plan, the study concludes that the model works and does not need revision. (KH)