DM 75, s. 2017 – Changes in DepEd Memorandum No. 40, s. 2017 (First Principals National Congress on K to 12)

April 12, 2017-DM 75, s. 2017 – Changes in DepEd Memorandum No. 40, s. 2017 (First Principals National Congress on K to 12)