As introduced in Case 4.3 and revisited in Case 7.3, the Springfield School Board needs to assign the middle school students in the city’s six residential areas to the three remaining middle schools. The new complication in that the school board has just made the decision to prohibit the splitting of residential areas among multiple schools. Therefore, since each of the six areas must be assigned to a single school, BIP now must be applied to make these assignments under the various scenarios considered in Case 4.3.