is based on the assumption that each learner has different psychological characteristics from others, such as learning speed, ability to concentrate, interaction styles, and intelligence. This principle is considered one of the most important principles of education, as it emphasizes the need to take into account differences in the planning and evaluation of education, as well as to adapt curricula and teaching methods to meet these needs. The needs of different students, which increases the effectiveness of education and reduces academic failure and low academic performance.