Cal. Code Regs. tit. 5, § 15183
(a) The local property tax share of the revenue limit is determined by subtracting, from the total revenue limit authorized by the governing board of the district (exclusive of the reduction for institutional or family home reimbursement received), all of the following:
(b) The local property tax share of the excess cost of maintaining schools and classes for physically handicapped (PH), mentally retarded (MR) or educationally handicapped (EH) pupils is determined by subtracting, from the total allowed expenditures for PH, MR, and EH programs on the Special Education Cost Data Sheet, all of the following: