In what year did Xiaoshengchu, Haidian District, Beijing implement the lottery?

In Xiaoshengchu, Haidian District, Beijing, the lottery was carried out, 20 1 1. According to the inquiry of Beijing Education Examinations Institute, the lottery of Xiaoshengchu in Haidian District of Beijing starts from 20 1 1. The school lottery means that the number of applicants in the school exceeds the number that the school can accommodate. At this time, the school or local education department can only choose the admission list by drawing lots.