"PLATO[R] Achieve Now" is a software-based curriculum for the elementary and middle school grades. Instructional content is delivered via the PlayStation Portable (PSP[R]) system, allowing students to access learning materials in various settings. Software-based assessments are used to customize individual instruction, allowing students to learn at their own pace with content appropriate for their skill level. "PLATO[R] Achieve Now" is aligned with the National Council of Teachers of Mathematics guidelines. The What Works Clearinghouse (WWC) reviewed 13 studies on "PLATO[R] Achieve Now." One of these studies meets WWC evidence standards; the remaining 12 studies do not meet either WWC evidence standards or eligibility screens. Based on the one study, the WWC found no discernible effects for the math achievement domain. The one study is a randomized controlled trial that included 1,037 sixth-grade students in 13 schools in three districts across the United States. Based on this one study, the WWC considers the extent of evidence for "PLATO[R] Achieve Now" to be small for math achievement. The conclusions presented in this report may change as new research emerges. (Contains 7 footnotes.) [The following study is reviewed in this intervention report: Campuzano, L., Dynarski, M., Agodini, R., & Rall, K. (2009). "Effectiveness of reading and mathematics software products: Findings from two student cohorts" (NCEE 2009-4041). Washington, DC: National Center for Education Evaluation and Regional Assistance, Institute of Education Sciences, U.S. Department of Education.]