FIGURE K–12-2 TIMSS math and science scores, 4th (1995 and 2003) and 8th (1995, 1999, and 2003) graders.
SOURCE: National Center for Education Statistics. Highlights from the Trends in International Mathematics and Science Study: TIMSS 2003. Washington, DC: US Department of Education, December 2004. Figure 1-4. Available at: http://nces.ed.gov/pubs2005/2005005.pdf.