The Legislature hereby finds and declares that the only state agencies that provide direct elementary and secondary level instructional services within the meaning of Section 41302.5 are those state agencies enumerated in Section 8880.5 of the Government Code, or in any successor to that section, not including any agency enumerated in any of subdivisions (a) to (e), inclusive, of that section, and California Indian education centers as established pursuant to Article 6 (commencing with Section 33380) of Chapter 3 of Part 20. The amount of any appropriation made to a state agency for direct elementary and secondary level instruction services shall be determined by applying the definition of those services, as defined in the California School Accounting Manual, to the expenditures of the agency. However, for the Diagnostic Schools for Neurologically Handicapped Children, as established pursuant to Article 1 (commencing with Section 59200) of Chapter 3 of Part 32, all expenditures of the agency shall be considered appropriations made to a state agency for direct elementary and secondary level instruction.