Rush Memo For Public Elementary and Secondary Schools: CONDUCT OF THE CY 2017 3RD QUARTER NATIONWIDE SIMULTANEOUS EARTHQUAKE DRILL (NSED) Posted on September 27, 2017 by DepEd Mandaluyong Leave a comment 17-09-143. CONDUCT OF THE CY 2017 3RD QUARTER NATIONWIDE SIMULTANEOUS EARTHQUAKE DRILL (NSED) Memorandum Unnumbered