The effect that inclusion and inclusionary school practices have on the achievement scores of low, average, and high academically achieving general education students was investigated. Achievement scores for 477 general education students from grades 1 through 5 were sampled over 3 years. During the 2 years that inclusion and inclusive practices were implemented, students either received academic instruction with students with disabilities or only with peers without disabilities. Inclusive school practices (curricular changes and supports) had a differential effect, as low achieving general education students appeared to benefit academically, while higher achieving students lost ground. General education students' reading scores were not significantly affected by the presence of students with disabilities, while in math, the effect was mixed.

No abstract