For Public Elementary & Secondary Schools: Corrigendum to Unnumbered Division Memorandum dated Feb. 18, 2015 re: Ranking for Secondary School Principal IV Posted on March 10, 2015 by MSM13 Leave a comment 1635. Corrigendum to Unnumbered Division Memorandum dated Feb. 18, 2015 re_Ranking for Secondary School Principal IV Memorandum