"The No Child Left Behind Act" (NCLB) aims to strengthen state Title I accountability systems to spur the improvement needed to reach the law's goals: that all students will reach proficiency by 2013-14. NCLB requires states and districts to report and act on student test results in a host of new ways. Among the many actions states and districts must take under NCLB's accountability system are identifying schools that repeatedly do not make progress, providing assistance to schools that need to improve, and offering more choices to parents. To understand how states, districts, and schools are implementing these accountability provisions, the U.S. Department of Education commissioned the "Evaluation of Title I Accountability Systems and School Improvement Efforts" ("TASSIE") beginning with the 2001-02 school year as a baseline year and continuing for two more years. The study has gathered data from educators in schools, district offices, and state education agencies through surveys and interviews and from parents through focus groups. This report covers the 2002-03 school year, and focuses on how the following key aspects of Title I accountability provisions in NCLB were carried out during the first year NCLB was in effect: (1) the assistance and interventions provided to Title I schools identified for improvement; (2) the steps these schools are taking to improve; and (3) public school choice and supplemental services offered to students in these schools. Overall, findings from 2002-03 showed that states and districts were making progress in implementing accountability systems under NCLB, but big gaps remained between their existing systems of accountability and the vision embodied in NCLB of coherent systems that support all schools and all students to reach high standards. [For findings from 2001-02, see "Evaluation of Title I Accountability Systems and School Improvement Efforts (TASSIE): First-Year Findings. Doc # 2004-01" (ED483058). For the Report Highlights, see ED613454.]