Thirty people. According to official website, there are 30-40 students in Zengdu No.1 Middle School in Suizhou City, including 30 students in small class and 40 students in large class. The school has 8 small classes, all of which are taught by senior preschool education experts from all over the country, which can stimulate children's talents. Suizhou Zengdu No.1 Senior High School, formerly Suizhou No.6 Middle School, was founded in 1956. Suizhou Zengdu No.1 Middle School is located at the west end of Qingnian Road in Zengdu District (urban area).