Teachers can also assess students through the use of portfolio. It is a systematic collection of students‟ work and provides a comprehensive picture of their achievement. The work collected provides a continuous record of the students‟ development and progress in the acquisition of knowledge, understanding of scientific concepts, application of process skills, and development of attitudes. It also provides opportunity for the students to have self-evaluation and reflections by revisiting their own portfolio.
The assessment modes listed above are by no means exhaustive. Adopting a variety of assessment modes enables the teachers to assess different aspects of the teaching and learning.