The fourth purpose is to determine whether a KLA/topic outcome has been achieved. In an educational sense this is the main purpose of assessment, as the ultimate goal of education is to encourage and facilitate learning.
study skills noun Education (originally US) methods and techniques that aid effective learning, especially viewed as a set of skills that can be acquired or taught; the ability to study effectively.
To undertake, make, or perform: take a walk; take a decision. b. To perceive or become aware of by one of the senses: took a quick look at the sky; took a smell of the spices. c. To commit and apply oneself to the study of: take art lessons; take Spanish.