STEP 1: Parent sends letter to the building principal that you plan to opt out. SAMPLE LETTER: Dear Principal,.Need an opt out letter template? Click HERE for the religious Opt Out letter. Parents can opt their children out of PSSA, PASA, and Keystone tests. You can read more about our general position and history on opting out of tests here. How to Opt Out of the PSSA's. This document describes the process of opting out of PSSAs and Keystone exams. It was provided to ALL principals in the Philadelphia School District. I would like to have my child opt out of the 2022 PSSA Exams. Sincerely,.