In 1913, Louisville Public Schools announced a plan to merge Manual and its rival Male High School into Louisville Boys High so that the two schools could share a new $300,000 facility. The plan took effect in 1915. Industrial training classes continued at the old Manual building. Parents objected to their children having to travel between the two buildings and the consolidation did not save the school board any money, so they voted to end the experiment in 1919. The new building became Male's home for the next 70 years and Manual returned to its old building at Brook and Oak. In 1923 an expansion added new laboratories, a cafeteria, and the largest gym ever built in Louisville at the time. The addition eventually burned and had to be destroyed in 1991.