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Intervention: Voyager Universal Literacy System®

References


Met WWC standards with reservations

Frechtling, J. A., Zhang, X., Silverstein, G. (2006). The Voyager Universal Literacy System: Results from a study of kindergarten students in inner-city schools. Journal of Education for Students Placed At-Risk, 11 (1), 75–95.

Additional sources:
Frechtling, J., Silverstein, G., & Zhang, X. (2003). Evaluation of the Voyager Universal Literacy System. Retrieved from Voyager Expanded Learning© Web site: http://www.voyagerlearning.com/docs/difference/ report_studies/Westat.pdf

Frechtling, J., Zhang, X., & Wang, L. W. (2004). Evaluation of the Voyager Universal Literacy System: Year 2. Retrieved from Voyager Expanded Learning© Web site: http://www.voyagerlearning.com/docs/difference/ report_studies/WESTAT_Voyager_2004_3.pdf

Hecht, S. A. (2003). A study between Voyager and control schools in Orange County, Florida 2002–2003. Retrieved from Voyager Expanded Learning© Web site: http://www.voyagerlearning.com/docs/difference/report_studies/ocps_2002_03.pdf

Did not meet WWC evidence screens

Hecht, S. A., & Torgesen, J. K. (2002). Within school treatment and control study: Voyager Universal Literacy System: Orange County, Florida 2001–2002. Retrieved from Voyager Expanded Learning© Web site: http://www.voyagerlearning.com/ResearchStudyDocuments/ OrangeCounty_FL_Treatment_Control_Study_2001-2002.pdf9

Roberts, G. (2002, June). Evaluation report on the impact of the Voyager Universal Literacy System in Birmingham City Schools. Retrieved April 19, 2007, from http://www.voyagerlearning.com/docs/difference/report_studies/Birmingham.pdf10

Roberts, G. (2003). Longitudinal study of the effect of universal literacy: A hierarchical linear modeling analysis of curriculum-based measurement data. Austin, TX: Evaluation Research Services. 10

Roberts, G., & Allen, A. S. (2003). Impact of the Voyager Universal Literacy System as measured by PALS in Virginia . Retrieved from Voyager Expanded Learning© Web site: http://www.voyagerlearning.com/ResearchStudyDocuments/ ULS_measuredby_PALS_Richmond_VA.pdf11

Starnes, D., Taylor, D., & Betourne, M. (2004). Voyager Universal Literacy System second year evaluation report: Fulton County Schools. Atlanta, GA: EMSTAR Research, Inc. 12

9 Incomparable groups: this study was a quasi-experimental design with substantial differences in student and teacher characteristics prior to the start of the intervention.
10 Does not use a strong causal design: this study did not use a comparison group.
11 Incomparable groups: this study was a quasi-experimental design that used achievement pretests, but it did not establish that the comparison group was comparable to the treatment group prior to the start of the intervention.
12 This study was a quasi-experimental design but did not use achievement pretests to establish that the comparison group was equivalent to the intervention group at baseline.