Research on the Construction of "5 + 2" Model of After-school Service in Primary and Secondary Schools under the Background of Big Data

With the introduction of the "double reduction" policy, after-school services in primary and secondary schools have become a key concern of students, parents and schools. In order to improve the quality of education and management efficiency. Hangzhou has used big data and Internet technology to create an "after-school service" system integrating family, school, society and bureau, which meets the diverse needs of school management and students, broadening the access channels of social forces and reducing the pressure on schools. This paper introduces the Hangzhou after-school "5 + 2" system in detail from three aspects of the overall system architecture, operation process, technology, and system functions. This paper puts forward specific suggestions for the future development mode of after-school services in primary and secondary schools.