Which assessment method is used to measure a student's progress over time?

The correct answer is formative assessment. This method is specifically designed to monitor student learning and progress throughout a course or instructional period. By utilizing various techniques—such as quizzes, discussions, observations, and interactive activities—teachers can gather feedback on students' understanding and skills. This information allows them to identify areas of improvement and adjust their teaching strategies accordingly.

Formative assessment emphasizes ongoing evaluation rather than a final measure of learning, enabling educators to support students effectively as they develop. It fosters a collaborative learning environment and encourages students to engage actively in their educational process.

In contrast, other methods serve different purposes. Summative evaluation typically occurs at the end of a learning period to assess what students have learned, focusing on outcomes rather than the process of learning. Diagnostic assessments are conducted before instruction begins, aiming to determine students' existing knowledge and skills to inform teaching. Portfolio assessments involve collecting a student's work over time to showcase their learning journey but are not solely focused on measuring progress continuously. Thus, formative assessment stands out as the most appropriate method for tracking and responding to student growth over time.