Tooley's abiding interesting in doing his part to help realise universal education drove him to teach mathematics in Zimbabwe for a few years after graduating college. Despite requesting rural posting, his relatively high level of education meant he was assigned to a school in urban Harare — a school many politicians’ children attended. After two years, he was finally able to wrangle an assignment in Zimbabwe's rural Eastern Highlands.
In 2000, working on his doctorate, Tooley was offered a commission by the World Bank's International Finance Corporation to study private schools in a dozen developing countries. Once again, however, Tooley would be stopped from accessing the poor. The private schools he was to study catered to children in the middle and upper classes. However, this, Tooley was told, was because there existed no private schools for the poor.
That's what makes his discovery of one, and then another, and then another, so exciting. And not just in Hyderabad, but in example after example, country after country, Tooley finds private schools catering to the poorest of the poor. Slum dwellers. Shantytown denizens.
Tooley studies these schools in his free time — why poor people pay for them, how they compare with public schools, how they're able to exist unbeknownst to international educational experts and even the regional education officers.