42 Pa. C.S. § 3114
In addition to those required by this subchapter to complete the course of training and instruction and successfully pass an examination prior to assuming office, any interested person may apply to the board to be enrolled in the course of training and instruction and take the examination. Any such interested person who successfully completes the course of training and passes the examination, and who subsequently is elected or appointed to the office of magisterial district judge, arraignment court magistrate or judge may secure a certificate from the Administrative Office as provided in section 3115 (relating to certification of successful completion of course of training) without again taking the course of training and instruction and passing the examination required by this subchapter prior to assuming such office.
42 Pa.C.S. § 3114