High Quality Content by WIKIPEDIA articles! Oklahoma Private School Association (OPSA) is an organization of proprietary postsecondary schools and colleges dedicated to a higher quality of education for Oklahoma`s technical and vocational workforce. Training at OPSA schools include computer technology, computer programming, medical assistant, LPN, surgical technician, dental hygiene, medical billing and coding, computerized accounting, transcription, court reporting, electircal, heating and air conditioning, just to name a few.