Olney Friends School is a small, co-educational boarding and day school affiliated with the Religious Society of Friends (Quakers). Located in the foothills of the Appalachian Mountains in Barnesville, Ohio, the school "challenges students to grow, celebrates intellectual vigor, provokes questions of conscience, and nurtures skills for living in community." Students come from around Ohio, around the country, and around the world to study the college prep curriculum. Currently (2017-2018), the school is attended by 53 students from 14 US states and 10 countries.

Barnesville is a village in Belmont County, Ohio, United States. It is located in the central portion of Warren Township in Belmont County and is part of the Wheeling metropolitan area. The population was 4,008 at the 2020 census.