Evaluation of the implementation and impact of an integrated prevention model on the academic progress of students with disabilities.

In this paper we report on the implementation and impact of an integrated prevention model (Achievement for All - AfA) to improve the educational experiences and outcomes of students with disabilities. It comprises three inter-related strands: assessment, tracking and intervention; structured conversations with parents; and, developing provision for wider outcomes. Participants were 12,038 students with disabilities from 431 mainstream primary and secondary schools across 10 Local Authorities in England involved in the two-year AfA pilot. Pre- and post-test data on academic attainment in English and Maths were compared with national data on academic progress for students with and without disabilities over an equivalent period of time. School-level contextual and implementation data and student-level socio-demographic and psychosocial data were also collected. Four hypotheses were tested regarding the impact of AfA on academic attainment in English (H1) and Maths (H2); the influence of aspects of the implementation context and processes (H3); and individual differences between students (H4). Our findings are discussed in relation to the identification and validation of critical intervention components and standards for assessing the practical significance of attempts to improve outcomes for students.