In the primary stage, Dacheng had classes for both junior and senior high school students. When Liu Yu-chi took over the position as Principal, he expanded the numbers of classes. As a result, the school contained five classes for senior high and eighteen classes for junior high.
In 1955, the scale of Dacheng was bigger. With the head of school Hsieh Hsin-chou’s leading, the territory of the school was not only on Simen Road . It had its branch on Kung Yuan Region ( NowYen Ping Junior High School ).
However, in 1960, the school only focused on cultivating junior high school students. Therefore, it only kept classes for junior high students. The school’s decision was in relation to response to the central government’s policy. While we lost the opportunity to enroll senior high school students, the numbers of classes were more than before. School included fifty-four classes for junior high school students.