This report is the first to focus on private school students' performance on NAEP assessments. It provides results in reading, mathematics, science, and writing in 2000, 2002, 2003, and 2005. Specifically, it focuses on the three private school types that combined enroll the greatest proportion of private school students (Catholic, Lutheran, and Conservative Christian) as well as private schools overall. It also compares the performance of students in these schools to that of public school students to provide additional perspective. Comparing student performance among the three types of private schools highlights several differences at grades 4 and 8 and a few at grade 12. Among the three types of private schools, few significant differences in performance were found at grade 12. The exceptions were that in 2000, the average score in science for grade 12 students in Catholic schools was 6 points higher than for students in Lutheran schools, and that in the 2000 mathematics assessment, a higher percentage of twelfth-graders in Catholic schools performed at or above Proficient than twelfth-graders in Conservative Christian schools. Where differences existed at grades 4 and 8, students in Lutheran schools generally outperformed those in Conservative Christian schools. In some grade/subject combinations, Lutheran school students outperformed Catholic school students, and Catholic school students outperformed Conservative Christian school students. Students at grades 4, 8, and 12 in all categories of private schools had higher average scores in reading, mathematics, science, and writing than their counterparts in public schools. In addition, higher percentages of students in private schools performed at or above Proficient compared to those in public schools.
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