The federal Class-Size Reduction (CSR) Program, first authorized in PL 105-277, begun in Fiscal Year 1999, represented a major federal commitment to help school districts hire additional qualified teachers, especially in the early elementary grades, so children would learn in smaller classes. The ultimate goal of the program was to improve student achievement, particularly in reading, by reducing class size in grades K-3 to 18 students. As part of the reauthorization of the 2001 Elementary and Secondary Education Act of 1965 (ESEA), the CSR program was folded into Title II. Although no longer a separate federal program, class-size reduction remains an allowable use of funds under Title II, Part A. It is one of many ways that districts can use their Title II, Part A funds to improve teacher quality and student achievement in their schools. Therefore, this evaluation provides valuable lessons not just about the federal CSR program, but also about a major component of Title II, Part A of NCLB. The evaluation was designed to address multiple research questions, organized into three main categories: (1) distribution and uses of federal CSR funds; (2) implementation of CSR; (3) and effects of CSR on class size. The authors were particularly interested in how districts used their funds, the numbers of teachers hired, the schools selected to receive CSR teachers, spending issues such as the extent of carryover from 1999-2000, and the coordination of federal CSR funds with other funding sources. [For the final report, see ED527475.]