High jump class which is a part of the activity for undertaking challenge is neglected at schools due to the lack of students' participation, difference in exercising function, lack of necessary facilities, mixed gender class, and difficulty when it comes to instruction. To this, class environment was formed by applying student centered class model by stage and level so that students can participate in the class in an increasingly easier, safer and interesting manner. This research targeted 36 male and female students of the mixed gender class at the Middle School Y located in Busan. Moreover, researcher's daily log, in-depth interview record, survey data, record on the observation, open answer type of questionnaire, formative evaluation and other qualitative data were collected and analyzed. It was possible to increase willingness to undertake challenge after applying class model by stage and level as a means to improve teaching and learning instruction method, which in turn increased satisfaction level towards the class, sense of confidence, attainment of the class objectives and active participation. This research paper presents meaningful information regarding providing students with diverse experiences, which is the core of physical education, and better teaching strategies for high jump classes. More importantly, it will contribute to making high jump classes more accessible and fun.