By the 1940s, budget concerns and national trends made it clear that Louisville Girls High School and duPont Manual would merge into one coeducational school. They finally did so in September 1950 and remained in the old Louisville Girls High School building. This fusion of institutions resulted in the birth of the modern duPont Manual High School – dropping 'Training' from its previous name. The same school building remains in use today, although two major additions have since been made. The middle school located on the building's first floor became Manly Junior High and moved to Manual's old building at Brook and Oak.