The Chicago Teachers Union strike was the most important domestic labor struggle so far this century--and perhaps for the last forty years--and the strongest challenge to the conservative agenda for restructuring education, which advocates for more charter schools and tying teacher salaries to standardized testing, among other changes. In 2012, Chicago teachers built a grassroots movement through education and engagement of an entire union membership, taking militant action in the face of enormous structural barriers and a hostile Democratic Party leadership. The teachers won massive concessions from the city and have become a new model for school reform led by teachers themselves, rather than by billionaires. Strike for America is the story of this movement, and how it has become the defining struggle for the labor movement today.