Abstract
Patterns of identification for special education services across three cohorts of students in kindergarten through third grade before and after implementation of a schoolwide, three-tier reading prevention model in one large school district are reported. The first cohort of students represents a historical control group that did not participate in the three-tier prevention model. The second and third cohorts of students represent successive cohorts of students who participated in the three-tier model from kindergarten to third grade. The data indicate a trend in the direction of a decreased percentage of students identified for special education through each cohort of students; however, there were no statistically significant differences in the overall percentages of students identified for special education across cohorts. Practical implications and further research are discussed.
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