DM NO. 1007, S. 2023. BEGINNING OF SCHOOL YEAR (BOSY) 2023-2024 ENCODING IN THE LEARNERS INFORMATION SYSTEM (LIS) Posted on September 25, 2023 by DepEd Mandaluyong Leave a comment DM NO. 1007, S. 2023. BEGINNING OF SCHOOL YEAR (BOSY) 2023-2024 ENCODING IN THE LEARNERS INFORMATION SYSTEM (LIS) Memorandum Numbered