Articles

Title Responsiveness-to-Intervention Symposium: How Many Tiers are Needed for Response to Intervention to Achieve Acceptable Prevention Outcomes?
Author

Vaughn, S. (2003)
Summary

Tiered interventions are discussed in this article and two case studies are presented to support the number of tiers that are needed in an RtI model.
Links

http://www.nrcld.org/symposium2003/vaughn/vaughn.pdf

Efficacy

Title Tiers of Intervention in Kindergarten Through Third Grade
Author

O’Connor, R.E., Harty, K. R., & Fulmer, D. (2005)
Summary

Reports results of an empirical study designed to investigate the impact of Tier 2 and 3 intervention on targeted students in kindergarten through grade 3. Descriptions of tiered instruction are provided. Results of the study report moderate to large effect sizes for direct intervention and a decrease in the number of students referred for special education.
Links

http://faculty.rcoe.appstate.edu/koppenhaverd/5710/read/dyslexia/oconnoretal05.pdf

Modules

Title Tiered Service-Delivery Model
Author

National Research Center on Learning Disabilities (NCLD)
Summary

Discusses key elements at each tier: screening, progress monitoring, and duration at each tier. (Note: In order to access Tier 2 and 3 descriptions, you need to click on the blue tabs at the bottom of the Tier 1 features.)
Links

http://www.nrcld.org/rti_practices/tiers/tier1.html
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