Where UPI Study fits, and where it does not
UPI Study courses are ACE-recommended or NCCRS-recommended, and UPI Study is not a college. The credit reaches OPI via a college transcript: an institutionally accredited college that considers recommended credit reviews your course and, if it awards credit, lists it on its transcript. TESU and UoPeople are partner colleges that consider ACE-recommended or NCCRS-recommended credit.
Choose a course with a plain link to P-12 teaching, such as Educational Psychology or Psychology of Diversity. Then ask OPI in writing whether that course, on that college's transcript, would count before you enrol.