If the US had closed achievement gaps with top-performing nations like Finland and Korea, its 2008 GDP could have been $1.3-$2.3 trillion higher. Closing gaps between low-income students and others could have increased GDP by $400 billion-$670 billion, and between low- and high-performing states by $425-$475 billion. The White City Estate has high levels of poverty, poor health, and residents requiring social services support. In 1994, a school was described as possibly the worst in Britain, failing to educate inner-city children from poorer backgrounds. It had no effective leadership or culture of self-improvement. By 2008 it was judged "outstanding" after implementing