Students of Jinan Yingdong Primary School attends the raising flag ceremony on September 1, 2010.

In southwest China's Chongqing municipality, 45,278 policemen and security guards have been assigned to all schools in 42 districts and counties under its jurisdiction.

Chongqing has worked out a budget of 1.2 billion yuan ($176 million) to build a prevention system to assure school yard security.

The Chongqing municipal education commission was also hoping to enact legislation on campus security and a draft is about to be completed.

The Ministry of Education and the Ministry of Public Security jointly ordered, in a circular earlier this month, that all kindergartens and schools should ensure security personnel, video surveillance devices and alarm systems are in place before school opens to students.

The new autumn semester will start on Sept. 1 with about 220 million primary and middle students stepping onto campus.