Wellston High School is a Late Art Deco educational building designed by Marcel Boulicault and completed in 1940. The two-story structure features the streamlined massing and restrained ornament characteristic of Depression-era institutional architecture. Its buff brick facade is organized symmetrically around a central entrance bay, with horizontal banding and geometric details providing subtle decorative interest. Large banks of steel-sash windows illuminate the interior classrooms, their repetitive rhythm emphasizing the building's length. The design balances functional efficiency with modest civic dignity, employing durable materials and clean lines typical of public school construction from this period.
Wellston High School was completed in 1940 for the Wellston School District — a small independent district in the municipality of Wellston, surrounded by but separate from the City of St. Louis. Marcel Boulicault designed it in a late Art Deco manner; it stands at 6321 Wells Avenue. Wellston was among the smallest school districts in Missouri and, for much of the twentieth century, the state's only all-Black school district. It had lost state accreditation by 2003, and in December 2009 the Missouri Board of Education voted to dissolve it. The district closed at the end of the 2009–2010 school year, and its students and assets were folded into the neighboring Normandy district in 2010.
