Which class is the key class in Chuzhou No.3 Middle School?

Categories 1, 2, 3 and 4 are midpoint categories. According to the information of official website in Chuzhou No.3 Middle School, as of September 7, 2023, the key classes of the school were a grade 1 class, class 2, class 3 and class 4. Chuzhou No.3 Middle School, referred to as Chuzhou No.3 Middle School for short, is located on the picturesque shore of South Lake and the Liu Qing River. This is a middle school with a history of one hundred years. Its predecessor was Yude Primary School, 1898, which was founded by American Christian pastor Scott. It is the earliest "new primary school" in the city.