There can be many reasons why a specific district experiences a notable aid change from the previous year, as both state-related and local factors can effect Equalization Aid eligibility. From the Equalization Aid formula perspective, significant changes in the amount of state money available for general school aids, shifts in the statewide shared cost ceilings and/or increase in the state average property value per member can contribute to an aid shift. Locally, significant changes in district property value, membership and/or shared cost can further cause a district to experience a change. From a global perspective, since the appropriation is distributed over 426 individual districts, a major change in any one district's data can affect each and every one of the other 425 districts.
When assessing the reasons for shifting, two easily-determined statistics can quickly indicate what might be happening to the district within the funding formula:
District Shared Cost Per Member as Percent of Secondary Ceiling
Observing how a district's shared cost per member, as a percent of the secondary ceiling, is changing over time can reveal how the district's spending level is changing in comparison to the rest of the state. For example, if the district in question was spending at 105 percent of the secondary ceiling a few years ago and is now spending at 100 percent of the secondary ceiling, this shows that, on average, the increase in expenditures for this district is not keeping pace with the increase happening in the other 425 districts. This may or may not be causing less aid for this district; however, the general rule is that less cost usually means less aid or less of an increase in aid (for negative tertiary districts, less cost usually means more aid).
District Equalized Value Per Member as Percent of State Average
Observing how a district's property value per member, as a percent of the state average property value per member, is changing over time can indicate whether the formula is viewing the district as more/less affluent. For example, if the district in question had 104.5 percent of the state average property value per member a few years ago and now has 100 percent of the state average property value per member, the formula views this district as becoming less wealthy. Generally, as property value per member decreases, aid from the state increases.
Longitudinal Data File
The Longitudinal Survey of Equalization Aid Formula Factors file contains longitudinal data to assist in identifying possible reasons for significant Equalization Aid eligibility changes from year to year. Each district has its own unique set of circumstances and there can be many reasons why a specific district's aid fluctuates from year to year. The two statistics discussed thus far may not completely explain the aid shift in every situation but they are strong indicators of what is happening to the district. Also included on page two of the Excel printout are graphs of select data elements.