[4] By 1938, the school had constructed a airplane hangar to deliver specialized training in mechanics, navigation, meteorology, federal air regulations, and flight safety.

[3] Aeronautics remained the primary programming focus of the school throughout the 1940s as the United States entered World War II.

The curriculum expanded to include auto mechanics, machine shop, welding, and electronics, to accompany the aviation program.

[5] Additional programs are added during the 1960s, such as practical nursing, agricultural mechanics, data processing, and other business and office courses.

The expansion added more space to the Donaldson Campus, including a new library, lecture hall, science labs, student services facilities, and a multi-purpose room for continuing education and academic instruction.