Portfolio assessment involves students collecting work over time with teacher guidance to demonstrate their learning and abilities. A portfolio represents a selection of the student's best work and shows growth. The criteria for what is included must be clear. Portfolio assessment matches teaching to assessment, has clear goals, and provides a profile of learner depth, breadth and growth over various skills not tested in traditional settings. It also increases student awareness, caters to individual students, develops social skills, promotes independence, and improves motivation through student-teacher dialogue.