FOR PUBLIC ELEMENTARY AND SECONDARY SCHOOL HEADS/OFFICERS IN-CHARGE: REITERATION ON THE SCHEDULE FOR THE CONDUCT OF THE 1ST QUARTER NATIONAL SIMULTANEOUS EARTHQUAKE DRILL Posted on March 4, 2020 by DepEd Mandaluyong Leave a comment DO MEMO NO. 18, S.2020. REITERATION ON THE SCHEDULE FOR THE CONDUCT OF THE 1ST QUARTER NATIONAL SIMULTANEOUS EARTHQUAKE DRILL tagged with Calamity, Safety Education Memorandum Numbered