Migrant workers queue at a school enrollment site in Ningbo, East China's Zhejiang province, May 17. Some parents had been waiting since 3 am. At some state-run schools in Ningbo, 70 percent of students are from migrant worker families. [Photo/Asianewsphoto]

A parent, left, enrolls his child at a primary school in Ningbo, East China's Zhejiang province, May 17. [Photo/Asianewsphoto]