For Public Elementary and Secondary Schools: CORRIGENDUM TO THE UNNUMBERED MEMO RE: ORIENTATION ON RANDOM DRUG TESTING dated September 11, 2017 Posted on September 13, 2017 by DepEd Mandaluyong Leave a comment 17-09-071. CORRIGENDUM TO THE UNNUMBERED MEMO RE: ORIENTATION ON RANDOM DRUG TESTING dated September 11, 2017 Memorandum Unnumbered