The Nation's Report Card[TM] informs the public about the academic achievement of elementary and secondary students in the United States. Report cards communicate the findings of the National Assessment of Educational Progress (NAEP), a continuing and nationally representative measure of achievement in various subjects over time. The results from the NAEP Trial Urban District Assessment (TUDA) make it possible to compare the performance of students in participating urban school districts to that of public school students in the nation, in large central cities (population over 250,000), and to each other. About 37,000 fourth- and eighth-graders from the following 11 urban districts participated in the fourth reading Trial Urban District Assessment in 2007. Six districts at grade 4 and five districts at grade 8 participated in 2002, ten districts participated in 2003, and eleven in 2005: Atlanta; Chicago; Los Angeles; Austin; Cleveland; New York City; Boston; District of Columbia; San Diego; Charlotte; and Houston. At grade 4, four districts showed score increases compared with 2002, two districts had higher average scores compared with 2005, and one district had a lower average score in 2007 compared with 2005. Also at grade 4, five districts improved their 2007 percentages at or above "Basic," and three districts improved their percentages at or above "Proficient" compared with 2002. At grade 8, two districts showed increases compared with 2002, and four districts had higher average scores compared with 2005. Also at grade 8, two districts improved their 2007 percentages at or above "Basic" compared with 2002, and two districts improved their percentages at or above "Basic" compared with 2005. (Contains 9 tables and 2 figures.)