The National Assessment of Educational Progress (NAEP) 2009 mathematics assessment was designed to measure students' knowledge of mathematics and their ability to apply that knowledge in problem-solving situations. Results are reported at both the national and state level for students in fourth and eighth grade. Twelfth-graders were also assessed in 2009, and results for both a national sample and selected states will be released in 2010. At the national level, results are presented for students in public and non-public schools, while state results are for public school students only.
http://nationsreportcard.gov/math_2009/