Ding Jie, Li Rongde, Su Xin and Zhou Simin:

A group of 30 parents staged a protest at the education department of Beijing’s Dongcheng district earlier in May to voice their opposition to a sweeping change to the “school district” policy now being tested by the local government.

Under the change, a school district, usually comprised of several neighborhoods, is no longer tied to one specific school. Instead, students in one school district can choose from a list of schools close to their homes depending on the availability of spaces at each of the schools.

Madison recently expanded its least diverse schools: Hamilton Middle and Van Hise Elementary.