Principal Apportionment

The Special Education (aka AB 602) Principal Apportionment includes revenue for the Base Grant Funding, Program Specialist/Regionalized Services, Low Incidence, Out-of-Home Care, and Extraordinary Cost Pool. This revenue is bundled as a single amount.

The Principal Apportionment is a series of apportionment calculations that adjust the flow of state funds throughout the fiscal year as information becomes known. The series are as follows:

  • The Advance Principal Apportionment, certified by July 20, is based primarily on prior fiscal year funding and establishes each LEA’s monthly state aid payment amount for July through January.
  • The First Principal Apportionment (P-1), certified by February 20, is based on the first period data that LEAs report to CDE in November through January. It supersedes Advance entitlement calculations and establishes each LEA’s monthly state aid payment for February through May.
  • The Second Principal Apportionment (P-2), certified by June 25, is based on the second period data that LEAs report to CDE in April and May. It supersedes P-1 entitlement calculations and determines the final state aid payment for the fiscal year ending in June.
  • The Annual Apportionment, certified by February 20 in the following year, is based on annual data that LEAs report to CDE. After the Annual Apportionment certification, which supersedes P-2, Annual is recertified three times, known as Annual R1, R2, and R3, with LEAs reporting corrected data at specific times. Any data corrections are reflected with the subsequent years’ certifications.
    • Annual First Recertification (R-1) is calculated by June 25 of the following year.
    • Annual Second Recertification (R-2) is calculated by February 20 of the second following year.
    • Annual Third Recertification (R-3) is calculated by June 25 of the second following year. 
Payments During the Fiscal Year

Payments for the Advance, First, and Second Principal Apportionments occur from July through June of the fiscal year, and in a proportionate amount provided here.  Following is an example of a 2024-25 Principal Apportionment: 

YearCertification PeriodAmountMonthAllocationPaymentTotal
Jul, 20242024-25 Advance Principal Apportionment$500,000Jul'245% of Amt$25,000$25,000
   Aug'245% of Amt$25,000$50,000
   Sep'249% of Amt$45,000$95,000
   Oct'249% of Amt$45,000$140,000
   Nov'249% of Amt$45,000$185,000
   Dec'249% of Amt$45,000$230,000
   Jan'259% of Amt$45,000$275,000
Feb, 20252024-25 First Principal Apportionment (P-1)$505,425Feb'2520% of Bal$46,085$321,085
   Mar'2520% of Bal$46,085$367,170
   Apr'2520% of Bal$46,085$413,255
   May'2520% of Bal$46,085$459,340
Jun, 20252024-25 Second Principal Apportionment (P-2)$498,170Jun'25Bal Due$38,830$498,170

Payments After the Fiscal Year

Payments for the Annual Certification and Recertifications occur as part of the Adjustments and Prior Year Recomputations. Following is an example of a 2024-25 Principal Apportionment: 

YearCertification PeriodAmountMonthAllocationPayment Total
Feb, 20262024-25 Annual Apportionment$502,925    
Jun, 20262024-25 Annual First Recertification (R-1)$502,935Jun'26R1 less P2$4,765$502,935
Feb, 20272024-25 Annual Second Recertification (R-2)$502,950    
Jun, 20272024-25 Annual Third Recertification (R-3)$502,950Jun'27R3 less R1$15$502,950

Changes to the allocation amounts may be due to several factors: 

  • Updates to the SELPA's special education property tax: If the SELPA's property tax amount increases, then the AB 602 net funding will decrease by the same amount. The same is true if the tax decreases, with a dollar-for-dollar change to the State AB 602 amount.
  • Updates to CDE's proration factor: Although the SELPA funding is calculated based upon a rate, funding availability may cause a proration of its entitlement. If the proration factor is 0.98, the SELPA will receive 98% of its calculated entitlement. A change in the proration factor may cause an adjustment. Find more information here.
  • Updates to LEA census data: AB 602 funding is calculated, in part, upon the SELPA's AB 602 average daily attendance (ADA). Any change in ADA may create an adjustment. 

Did you know...

The Principal Apportionment is a great way for CDE to provide the funding beginning in July, even though much of the data used to determine the exact amount isn't available until later in the year. 

For example, Base Grant Funding is determined from the current year's ADA. However, that won't be available until February! The Principal Apportionment starts with an estimate that is paid from July through January.