"Scott Foresman-Addison Wesley Elementary Mathematics" is a core curriculum for students at all ability levels in prekindergarten through grade 6. The program supports students' understanding of key math concepts and skills and covers a range of mathematical content across grades. The What Works Clearinghouse (WWC) reviewed 12 studies on "Scott Foresman-Addison Wesley Elementary Mathematics" for elementary students. Two of these studies meet WWC evidence standards; one study meets WWC evidence standards with reservations; the remaining nine studies do not meet either WWC evidence standards or eligibility screens. Based on the three studies, the WWC found mixed effects in mathematics achievement for elementary students. Appendices include: (1) Study characteristics; (2) Outcome measures for the mathematics achievement domain; (3) Summary of findings included in the rating for the mathematics achievement domain; (4) Summary of subgroup findings for the mathematics achievement domain; and (5) "Scott Foresman-Addison Wesley Elementary Mathematics" rating for the mathematics achievement domain. (Contains 9 footnotes.) [The following studies are reviewed in this intervention report: (1) Agodini, R., Harris, B., Atkins-Burnett, S., Heaviside, S., Novak, T., & Murphy, R. (2009). "Achievement effects of four early elementary school math curricula: Findings from first graders in 39 schools" (NCEE 2009-4052). Washington, DC: National Center for Education Evaluation and Regional Assistance, Institute of Education Sciences, U.S. Department of Education; (2) Resendez, M., & Azin, M. (2006). "2005 Scott Foresman-Addison Wesley Elementary Math "Randomized control trial: Final report." Jackson, WY: PRES Associates, Inc.; (3) Resendez, M., & Manley, M. A. (2005). "Final report: A study on the effectiveness of the 2004 Scott Foresman-Addison Wesley Elementary Math program." Jackson, WY: PRES Associates, Inc.; (4) Cambium Learning, Inc. (2006). "An evaluation of Voyages mathematics, Fairview public schools 2005-2006: Technical report." Natick, MA: Author; (5) Cummins-Colburn, B. J. L. (2007). Differences between state-adopted textbooks and student outcomes on the Texas Assessment of Knowledge and Skills examination (Doctoral dissertation, Touro University International). "Dissertation Abstracts International, 68"(06A), 168-2299; (6) Gatti, G. G. (2004). "Scott Foresman-Addison Wesley Math national effect size study." Upper Saddle River, NJ: Pearson Education; (7) Jitendra, A. K., Deatline-Buchman, A., & Sczesniak, E. (2005). A comparative analysis of third-grade mathematics textbooks before and after the 2000 NCTM standards. "Assessment for Effective Intervention, 30"(2), 47-62; (8) Klein, D. (2000). "High achievement in mathematics: Lessons from three Los Angeles elementary schools." Washington, DC: Brookings Institution Press; (9) Simpson, N. (2001). "Scott Foresman California Mathematics validation study pretest-posttest results." Sacramento, CA: Pearson Scott Foresman; (10) Slavin, R. E., & Lake, C. (2007). Effective programs in elementary mathematics: A best-evidence synthesis. "The Best Evidence Encyclopedia." Retrieved April 21, 2008, from http://www.bestevidence.org/word/elem_math_Feb_9_2007.pdf; (11) Triantos, L. M. (2005). "The aftermath of implementing a standards-based curriculum in a K-8 district: Is there a correlation between hands-on instruction and math scores?" Unpublished master's thesis, Rowan University, Glassboro, NJ; and (12) WESTAT. (2003). "Analysis of field testing for Scott Foresman-Addison Wesley Mathematics 2004." Rockville, MD: Author. To view the September 28, 2006 report, see ED493777. ]