By the 1960s the college had developed a junior college program (becoming accredited in 1964) and was able to open its doors to an expanding student body. During this time it began a steady growth as one of the largest junior colleges in the country and the largest within the Pentecostal Holiness Church. These broad changes resulted in various buildings being built (Light Library, Irwin Learning Center, Mabee Science Center, and the Mash Loflin Field House) and degree offerings saw the name shifting to Oklahoma City Southwestern College (OCSC) to better reflect the scope of the expanded school.