How many people are in the same grade in Zhaoqing Mei Jia Junior High School?

What the subject wants to ask is "How many people are there in a grade in Mei Jia Junior High School?" 300 people. According to official data of Zhaoqing Education Bureau, Zhaoqing Mei Jia School was founded by Canadian Education Development (China) Co., Ltd. on 1995. It is a full-time boarding school that integrates young children and implements bilingual teaching in both Chinese and English. There are 10 classes in grade one, grade two and grade three in Mei Jia, Zhaoqing, with 30 students in each class and 300 students in each grade.