The U.S. federal government has played a growing role in setting nationwide education policy since the passage of the Elementary and Secondary Education Act (ESEA) in 1965. This Act, along with the 'Equality of Educational Opportunity' report commissioned by the 1964 Civil Rights Act, led the U.S. Office of Education to pursue a policy agenda focused on equalizing access and ameliorating poverty through the education system. Despite the promotion of equity serving as the officially stated goal of federal policy, expert evaluations of the government's efforts incorporated technical assumptions from the field of economics that prioritized maximizing "efficiency" between inputs and outputs in the education system. When the ESEA was reauthorized in 2002 as No Child Left Behind, significant 'policy drift' had occurred such that the evaluation of teacher quality -- which was the subject of a large literature in economics on the 'education production function' -- was incorporated as a key component of the education system's flagship anti-poverty initiative, Title I.