Management of teaching in general and teaching Mathematics in particular according to the 2018 General Education Program is an important task for the principal of a high school in the current context of educational reform. At Binh Chanh High School, while the principal has achieved some positive results in management of teaching Mathematics, there are still certain limitations. Therefore, based on the assessment of the current situation, this article proposes measures to improve the quality of management of teaching Mathematics according to the 2018 General Education Program at Binh Chanh High School, with the aim of enhancing the school’s educational quality.