The overall average score of the SEL can be calculated by adding up each score of all the items and dividing the total score by the number of items. Even though the SEL is not divided into the commonly used four (cognitive, metacognitive, social, and affective) or six (memory, cognitive, compensation, metacognitive, social, and affective) strategy categories, all the items of the SEL were assumed to belong to one of each of the strategy categories classified above.