For Public Elementary and Secondary Schools: 2017 NATIONAL LEADERSHIP AND MANAGEMENT SEMINAR TRAINING WORKSHOP FOR SCHOOL HEADS AND ASPIRING SCHOOL PRINCIPALS Posted on April 7, 2017 by DepEd Mandaluyong Leave a comment 17-04-026. 2017 NATIONAL LEADERSHIP AND MANAGEMENT SEMINAR TRAINING WORKSHOP FOR SCHOOL HEADS AND ASPIRING SCHOOL PRINCIPALS Memorandum