Internal assessment also serves as a basis for professional development. Teachers who analyze the work of their students will see trends in student performance that may be related to instruction. For example, a teacher who sees that performance of his or her music students over time lacks depth may wish to take advanced music courses to elicit more depth in student performance.

An ongoing practice of internal assessment enables teachers to monitor learning as part of their teaching processes. It indicates how to adjust instructional strategies to accommodate the different needs and learning styles of students. Internal assessment also aids students in self-assessment by providing them with critical feedback. Though teachers sometimes design specific tasks to address particular concepts or skills; any student product and learning process can be viewed as an assessment tool, providing teachers with valuable information on current levels of student performance.