This research aimed to investigate and develop an online system for educational measurement and evaluation with a focus on authentic assessment. The research process consisted of four main stages: (1) analyzing the current state and carrying out qualitative interviews on authentic assessment, (2) developing an online measurement and evaluation program and assessing its quality, (3) implementing the program in real-world situations, and (4) evaluating its effectiveness. The research findings indicate that most teachers predominantly rely on standardized testing as the primary tool for assessing student performance, and the scoring of student work lacks well-defined assessment criteria. The developed program is designed for use by administrators, students, and teachers and is compatible with Windows XP and Windows 10 operating systems. The evaluation of the program's effectiveness validates its applicability in terms of usability, practicality of implementation, alignment with the educational context, and accuracy of assessment results. Additionally, teachers using the program expressed satisfaction with its data processing capabilities, indicating its practical applicability in teaching and learning environments.