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 gain knowledge of or skill in through study, instruction, or experience: learned how to sail; learned the new computer program; learn to speak Hindi. b. To become aware or informed of; find out: learned the truth about him; learned that it was best not to argue. See Synonyms at discover.