Costs are higher for the ceiling method and are related to enrollment. Costs are significantly higher for enrollments under 100 for all methods. The final cost for low enrollments is the sum of the first three rules of thumb multiplied by the low enrollment multiplication factors in Table 1 below. A legislator w ho is elected from an area with a large urban school district and several smaller rural districts wants to understand how class size measurement will effect costs in these districts. Assume all districts have an average class size of 25, with average enrolment in the urban district of 150 students and 75 students in the rural districts.
Costs are also always higher in the rural schools.
Armed with this information the legislator may want to lobby for implementation that reduce costs and funding formulas to meet the costs faced by her district.