Ohio Rev. Code § 3323.142
As used in this section, "per pupil amount" for a preschool child with a disability included in such an approved unit means the amount determined by dividing the amount received for the classroom unit in which the child has been placed by the number of children in the unit. For any other child, "per pupil amount" means the amount paid for the child under section 3317.20 of the Revised Code.
When a school district places or has placed a child with a county board of developmental disabilities for special education, but another district is responsible for tuition under section 3313.64 or 3313.65 of the Revised Code and the child is not a resident of the territory served by the county board of developmental disabilities, the board may charge the district responsible for tuition with the educational costs in excess of the per pupil amount received by the board under Chapter 3317. of the Revised Code. The amount of the excess cost shall be determined by the formula established by rule of the department of education and workforce under section 3323.14 of the Revised Code, and the payment for such excess cost shall be made by the school district directly to the county board of developmental disabilities.
A school district board of education and the county board of developmental disabilities that serves the school district may negotiate and contract, at or after the time of placement, for payments by the board of education to the county board for additional services provided to a child placed with the county board and whose individualized education program established pursuant to section 3323.08 of the Revised Code requires additional services that are not routinely provided children in the county board's program but are necessary to maintain the child's enrollment and participation in the program. Additional services may include, but are not limited to, specialized supplies and equipment for the benefit of the child and instruction, training, or assistance provided by staff members other than staff members for which funding is received under Chapter 3317. of the Revised Code.
R.C. § 3323.142