Identify the assessment method used to evaluate a student's performance over time.

Portfolio assessment is an effective method for evaluating a student's performance over time because it provides a comprehensive collection of a student's work that reflects their learning journey, progress, and achievements. Portfolios typically include various types of student work, such as projects, essays, exams, drawings, and reflections, showcasing not only the final products but also the process of learning.

This method allows educators to assess growth and development in skills and knowledge over a significant period, offering insights into a student's strengths, areas for improvement, and overall learning trajectory. Moreover, it encourages student self-evaluation and reflection, fostering a deeper understanding of their own learning processes.

In contrast, other assessment methods such as standardized testing focus on evaluating students at a single point in time and may not capture the breadth of a student's capabilities and development. While formative assessment aims to monitor student learning for the purpose of providing ongoing feedback, it does not encompass the comprehensive nature of a portfolio. Summative assessment, on the other hand, typically evaluates learning at the end of an instructional unit, which may not accurately reflect a student's growth and learning process over time.