The background of this research is: the low availability of physical facilities, the low quality of teachers, low student achievement, and a decrease in the number of students entering state universities. This study aims to describe and analyze the learning system management to improve the quality of student learning in Chemistry lessons at SMA Negeri 8 and SMA Taman Siswa in Bekasi City. The two high schools, consisting of SMA Negeri 8 and SMA Taman Siswa in Bekasi City, both accredited A, were the subjects of this study, which used the multiple case study method. The Yin case study model was used as the conceptual framework to formulate problems and analyze findings. Data collection was conducted through in-depth interviews, observation, and document studies. The collected data were analyzed individually and across cases to see similarities and differences. The results of the study show that 1) the learning planning process is relatively good, but some teachers still need guidance in making lesson plans (RPP); 2) the implementation of learning is relatively good, teachers carry out learning activities including introduction, core, and closing activities; 3) learning control is relatively good. Supervision in SMA Negeri 8 Bekasi City is carried out by educational supervisors from the education agency, and managerially, it is carried out by the school principal assisted by the curriculum vice principal. Meanwhile, in SMA Taman Siswa Bekasi City, supervision is also carried out by the foundation; 4) learning evaluation is relatively good. The school principal provides guidance, assistance, supervision, and assessment on technical issues related to the implementation and development of teaching and education programs to create a conducive learning environment; and 5) the impact of implementing learning management on students and schools are: a) final school exam results, b) accreditation scores, c) community trust, and d) academic and non-academic achievements of SMA Negeri 8 Bekasi City students, e) students who enter state universities.