In 1922, the Texas Department of Education informed the district that the Spanish School was "inadequate ... for high school work." By 1924, the district had constructed a new building to house the Plano Public School. In 1935, while the country was in the midst of the Great Depression, the WPA offered to build the district a much-needed new gym. The US$125,000 ($ according to inflation) building, completed in 1938, was used as a gym, auditorium, classroom, and laboratory, allowing new subjects to be taught, including agriculture, business, and home economics. At the time, Texas required that students complete 16 credits, or full semester courses, to graduate. This expansion allowed Plano students a choice of 30 credits with which to fulfill the requirement.