Ohio Rev. Code § 3796.30: Activities prohibited near schools, churches, libraries, playgrounds or parks.

(A) Except as provided in divisions (C) and (D) of this section, no licensed cultivator, licensed processor, licensed dispensary, or licensed laboratory shall be located within five hundred feet of the boundaries of a parcel of real estate having situated on it a school, church, public library, public playground, or public park.

(B) If a request for relocation of a facility of a licensed cultivator, licensed processor, licensed dispensary, or licensed laboratory would result in the facility being located within five hundred feet of the boundaries of a parcel of real estate having situated on it a school, church, public library, public playground, or public park, the division of cannabis control shall deny the request for relocation.

(C) This section does not require relocation or closure of a facility used by a licensed cultivator, licensed processor, licensed dispensary, or licensed laboratory, if that facility has a certificate of operation at the time a school, church, public library, public playground, or public park relocates, or is established, on a parcel of real estate, the boundaries of which are within five hundred feet of that operational facility.

(D) This section does not apply to research related to marijuana conducted at a state university, academic medical center, or private research and development organization as part of a research protocol approved by an institutional review board or equivalent entity.