The Hornby School Restoration Society was formed and the school, along with a one-half acre of land, was donated to the organization in 1973; an additional half acre was donated in 1991. Hornby School was reopened on August 26, 1984, and now functions as a museum. It was listed on the National Register of Historic Places on August 13, 2008.
The Hornby School is a working one-room schoolhouse and replicates the operation of the school from the 1870s to the early 1900s. Of the ten constructed in Greenfield Township and the six that survived to the 1940s, it is the only one that was not modified: one is an automotive parts store, three are residential homes, and another burned down in a fire. All of the chalkboards, desks and other teaching implements were original to Hornby School or were from one of the other schoolhouses in the township. The only other one-room schoolhouse in the county is located on the campus of Northwestern High School in Albion, PA.