The Alco School is a former educational facility located just north of Arkansas Highway 66 in rural western Stone County, Arkansas, not far from the hamlet of Alco. It is a single-story stone structure, with a hip roof that has two eyebrow dormers. The main entry is on the western facade, sheltered by a parapeted porch. The interior originally had two classrooms, and has been converted to residential use. The school was built in 1938 as a National Youth Administration works project.
The school building was listed on the National Register of Historic Places in 1992.