Although many of Hills dale's students came from wealthy households, by the late 1990 average test scores were sliding and it had earned the unaffectionate nickname (綽號) "Hills jail.

In wealthy societies, the logic often reverses.

Why do people in wealthy countries prefer to have fewer children

It is also of concern that the misguided advice that students should speak only English is given primarily to poor families with limited educational opportunities, not to wealthier families who have many educational advantages.