DM NO. 587, S. 2022. ADDITIONAL INFORMATION ON YEARLY COLLECTION OF DATA INFORMATION REQUIREMENTS, VALIDATION PROCESSES AND EOSY UPDATING OF LEARNERS IN THE LIS SY 2021-2022 Posted on June 27, 2022 by DepEd Mandaluyong Leave a comment DM NO. 587, S. 2022. ADDITIONAL INFORMATION ON YEARLY COLLECTION OF DATA INFORMATION REQUIREMENTS, VALIDATION PROCESSES AND EOSY UPDATING OF LEARNERS IN THE LIS SY 2021-2022 Memorandum Numbered