Currently, the management of sports in accessing relevant information due to data being scattered and unorganized. This issue results in inconvenience and inefficiency in the overall management process. To address this problem, the researcher proposed the development of a tool to support the efficient management of sports competitions by providing convenient and rapid access to necessary information. The objectives of the research were (1) to develop a sports management website for Bothong Wongchanwittaya School, Bothong District, Chonburi. (2) to evaluate satisfaction with the development of the sports management website for Bothong Wongchanwittaya School, Bothong District, Chonburi. The study employed a research and development (R&D) methodology using the SDLC model. Data collection instrument was a questionnaire which was responded by a sample group of 306 students. Statistical analysis by finding the mean and standard deviation.
        Research results the development of website for intramural sports management at Bothong Wongchanwittaya school, Bothong district, Chonburi province, following in 5 steps guided by SDLC Model. The development followed five steps of the SDLC model: planning, analysis and design, implementation, testing, and evaluation. The overall evaluation indicated a high level of satisfaction in terms of performance, design, and usability (=4.38, S.D.=0.66 ) aspect of performance in high level (=4.40, S.D.=0.72) aspect of design in high level (=4.39, S.D.=0.68), aspect of usability in high level (=4.36, S.D.=0.68).