According to the query of Apollo Examination Network, there are 20 classes and more than 900 employees in Grade One of the High School Attached to Beijing Normal University. Class number 1- 16 is the ordinary class, and 17-20 is the experimental class of four projects. In most cases, the middle school attached to Beijing Normal University refers to the middle school attached to Beijing Normal University. It is the first middle school attached to Beijing Normal University directly under the Ministry of Education, the first batch of municipal key middle schools and the first batch of demonstration high schools in Beijing. The middle school attached to Beijing Normal University was formerly Wucheng School, which was founded in 1923. It is the earliest public middle school in China and one of the most famous middle schools in China, enjoying a high reputation at home and abroad. So Class One is not an experimental class.