The document discusses the development of the Philippine public school curriculum model. It outlines key changes and reforms to the education system from pre-Spanish times to the present day, including the introduction of the National Elementary School Curriculum in 1984 and New Secondary Education Curriculum in 1991. These were research-based curricula that emphasized mastery learning and developing minimum learning competencies in fewer subject areas. The curriculum has continued to evolve with revisions made in 2002, 2010, and most recently in 2012 with the K-12 Basic Education Curriculum.