The conversion of San Jose National High School into Occidental Mindoro National College by virtue of Batas Pambansa Blg. 531 on June 24, 1983 opened new horizons and opportunities to the youths of Occidental Mindoro to pursue higher education. With the Conversion, the institution offered baccalaureate courses leading to the degrees of Bachelor of Secondary Education (BSED), Bachelor of Elementary Education (BEED), Bachelor of Science in Commerce  (BSC), Bachelor of Science in Agriculture (BSA) and Bachelor of Science in Accountancy (BS Accty). Pioneer enrollees of the College were 35 BEED and 16 BSED.


In the school year 1991 - 1992 the institution absorbed the Occidental Mindoro Community College, Mamburao as a satellite campus. It offered the following baccalaureate courses: Bachelor of Elementary Education (BEED) and Bachelor of Science in Commerce along with non - degree courses.


The enrollees kept on increasing every year which prompted the College to offer another program in Education, the Bachelor in Elementary  and Secondary Education (BESED). It is a five year program wherein graduates could either teach in elementary or secondary level. In addition, the TED also offers the Continuing Professional Teacher Education (CPTE) for degree holders of programs other than Education.


Furthermore, the Institution has expanded its curricular offerings and added graduate courses. These are Master of Arts in Teaching English, Master of Arts in Teaching in Filipino, Master of Arts in Development Education (MADEVED), and Masters in Public Administration (MPA).


The Department also maintains Elementary and Secondary schools to serve as laboratories for the Teacher Education programs. In addition to these, extension school were opened; the Damayan Center at Canwaling, and the Caminawit Extension Program (CEP) at Caminawit, San Jose. These programs offer secondary education, which aimed to provide quality education to the less priviledged youth of Occidental Mindoro.