Ohio Rev. Code § 3323.143
If a child with a disability's custodial parent has made a unilateral placement of the child, the parent shall be responsible for payment of tuition to the program or facility the child is attending as a result of that placement as long as the district of residence has offered a free appropriate public education to that child. As used in this section, "unilateral placement" means withdrawing a child with a disability from a program or facility operated by the district of residence or from a program or facility with which the district of residence has arranged for education of the child and instead enrolling that child in another program or facility that is not a home, as defined in section 3313.64 of the Revised Code, or that is not a facility or program available to the child pursuant to an open enrollment policy under section 3313.98 or 3313.983 of the Revised Code.
R.C. § 3323.143