The UPCAT is only required for applicants of the BAMS and BES program. However, for BAMS and BES applicants, we suggest you read through this article first: General Information Bulletin on Undergraduate Admissions, to know if you do not have to take the UPCAT.
Meanwhile, only the following programs have admission exams:
Associate in Arts - Undergraduate Admission Test
Bachelor programs - UPCAT (check the UPCAT website to know who can take the UPCAT)
Master of Arts in Language and Literacy Education - MALLE Qualifying Exam
Master of International Health - MIH Qualifying Exam
Master of Public Management - MPM Graduate Admission Test
Master of Social Work - MSW Qualifying Exam
To know the admission requirements and procedures to these programs, please visit this page: How do I apply for a UPOU degree program?
Read through these published FAQ articles to check whether some of your questions regarding admission procedures, exams, requirements, etc. are addressed.