This report presents highlights of the results for fourth- and eighth-grade students in Puerto Rico for the 2003 and 2005 National Assessment of Educational Progress (NAEP) in mathematics. The NAEP mathematics assessment was administered to public school students in Puerto Rico for the first time in 2003. Although NAEP had previously administered some of the assessment in Spanish to students who required accommodations, this was the first time an entire NAEP administration was in a language other than English. The NAEP mathematics assessment was administered again to public school students in both fourth- and eighth-grades in Puerto Rico in 2005. Because modifications were made for the 2005 administration in Puerto Rico, NAEP mathematics scores should not be compared between the two years. Results are reported as average scores and as the percentages of students performing at or above three achievement levels: Basic, Proficient, and Advanced. Scores are also reported at different percentiles (showing performance for lower-, middle-, and higher-performing students) and by subject subscales (showing performance in specific content areas). Performance of students in Puerto Rico is compared to all public school students in the nation and to public school students from low-income families in the nation. In all cases, students in Puerto Rico performed lower than the nation and low-income students. The report also includes sample assessment questions in mathematics, and technical notes provide information about sampling, school and student participation rates, use of accommodations, statistical significance quality of 2003 results, and changes in 2005 administration.
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