CHINESE PARENTS ARE ANGRY, as the earthquake reveals substandard construction in the schools.

The earthquake’s destruction of Xinjian Primary School was swift and complete. Hundreds of children were crushed as the floors collapsed in a deluge of falling bricks and concrete. Days later, as curiosity seekers came with video cameras and as parents came to grieve, the four-story school was no more than rubble.

In contrast, none of the nearby buildings were badly damaged. A separate kindergarten less than 20 feet away survived with barely a crack. An adjacent 10-story hotel stood largely undisturbed. And another local primary school, Beijie, catering to children of the elite, was in such good condition that local officials were using it as a refugee center.

“This is not a natural disaster,” said Ren Yongchang, whose 9-year-old son died inside the destroyed school. His hands were covered in plaster dust as he stood beside the rubble, shouting and weeping as he grabbed the exposed steel rebar of a broken concrete column. “This is not good steel. It doesn’t meet standards. They stole our children.”

Building codes matter.