The Electronic Mathematical Assessment Tool (e-MAT) is a comprehensive tool designed to assist teachers in evaluating both student performance and learning outcomes. Developed based on extensive research, this tool reflects insights from students' preferences regarding various features of electronic assessment platforms, as well as teachers' perceptions of administering assessments. The data collected through this research informed the conceptualization and design of the tool. e-MAT offers a variety of test formats, which students can access both online and offline, provided the content has been pre-downloaded. Additionally, the tool features an automatic evaluation system, enabling students to receive immediate feedback, fostering autonomous learning and promoting self-directed educational growth.