Junior high school 1803 class, senior high school 18 12 class. According to the information of the middle school attached to Tsinghua University, the best two classes in this school are Grade Three Class 1803 and Grade Three Class 18 12, because both classes have won the honorary title of "Beijing Excellent Class Collective". Tsinghua High School is a full-time public complete middle school, a key middle school in Beijing and a model ordinary high school in Beijing, which is headed by Haidian District Education Committee.