In the rapid process of urbanization in China，there are thirty million school-aged children，and a majority of them have spent most of their lives in the cities. The new household registration（Hukou）reform reinforced the strict population control in mega cities. Shanghai had set off a new round of campaign to drive the low-end of the working population out of town，and Beijing had begun to set extremely high thresholds for migrant youth to attend public schools. How to protect non census registered school-age children for receiving compulsory education had become a serious problem to be solved in the process of urbanization.