It is needed to change from traditional teacher-oriented lessons to learning-oriented ones in order to enhance academic abilities of students and satisfy the learning needs of an individual student. For finding an appropriate answer for it, our school has improved class management based on Universal Design for Learning proposed by an American educational institute, CAST 2008. The UDL recommends a flexible class design without making a barrier in front of a specific learner, and aims to foster active learners, while thinking about diversity. Regarding the introduction of a framework of UDL in a school between April 2020 and October 2021, it was confirmed that the students of the specific grade showed desirable self-esteem and better attitude...