This study focuses on the development and evaluation of Ace the Board, a computerized mock board examination system designed to assist Bachelor of Library and Information Science (BLIS) students and graduates in preparing for the Librarian's Licensure Examination (LLE). As challenges related to limited access to realistic mock examinations, inadequate performance feedback, and unfamiliarity with computerbased testing environments persist, educational institutions are increasingly exploring technology-driven solutions to enhance licensure examination preparedness. The study employed a developmental research design utilizing the Software Development Life Cycle (SDLC) model, which involved the planning, analysis, design, implementation, testing, and maintenance of the proposed system. To evaluate the system's effectiveness and acceptability, six (6) respondents composed of BLIS students and graduates participated in system testing and assessment. An evaluation instrument based on the ISO 9126 software quality standards was used to assess the system in terms of functionality, reliability, usability, and efficiency. The data gathered were analyzed using the weighted mean and verbal interpretation.