Information on filing and maintaining a Private School Affidavit (PSA). Explore an example of an authorization letter for PSA that can be customized to your needs.Download this document in Word format for free. Apply to the Teacher Education Programs. The following links provide all the necessary information to guide you through the application process. This format can be used if you wish to giveauthorization for more than one event application during one, two or three yearperiod. By accessing the Granicus Products and Services, COUNTY accepts this Agreement. Tom Mullen informed the Board that a PSA is in the process of being completed and should be shown on cable stations sometime in January. We have opportunities for board-certified Family Medicine or Internal Medicine physicians passionate about providing exceptional, state-of-the-art primary care. Download, print and complete the authorization form.