This study aims to develop and implement a web-based application designed to assist decision-making in determining eligible students for the National Achievement-Based Selection (SNBP) at SMAN 8 Surabaya. The primary challenge arises from the conventional selection procedures currently in use, which may lead to subjective judgments and inefficiencies when handling multi-criteria data. ARAS method is employed to evaluate both academic and non-academic factors in a systematic manner, resulting in a ranked list of students based on preference values. The application was constructed following the phases of the System Development Life Cycle or SDLC. Analytical results indicate that alternative A2 achieved the highest preference value of 92.50, followed by other alternatives according to the ranking generated by the system. Usability evaluation through the System Usability Scale method (SUS) produced an average score of 88.38, classified within the excellent category, so that the application is user-friendly and appropriate for practical use in the SNBP student selection process
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