Ohio Rev. Code Ann. § 3334.19
(A) The Ohio tuition trust authority shall adopt an investment plan that sets forth investment policies and guidelines to be utilized in administering the variable college savings program and investment options offered by the authority. The investment options shall include a default option to benefit contributors who are first-time investors or have low to moderate incomes. Except as provided in section 3334.20 of the Revised Code, the authority shall contract with one or more insurance companies, banks, or other financial institutions to act as its investment agents and to provide such services as the authority considers appropriate to the investment plan, including:
(F) The assets of the program shall be preserved, invested, and expended solely for the purposes of this chapter and shall not be loaned or otherwise transferred or used by the state for any other purpose. This section shall not be construed to prohibit the investment agents of the authority from investing, by purchase or otherwise, in bonds, notes, or other obligations of the state or any agency or instrumentality of the state. Unless otherwise specified by the authority, assets of the program shall be expended in the following order of priority: