A meta analysis of response to intervention model based researches on improving the academic performance of students at risk of math disorder

The aim of the present study was to meta-analytically review the effectiveness of the interventions, called the Response-to-Intervention, on improving the academic performance of students at risk of math disorder. To achieve the goal of the research using both manual and systematic search methods, 116 studies passed the initial screening, of which 35 were selected and analyzed using CMA 2 software because of meeting the input criteria. The research tools were research quality checklist and met-analysis checklist. The combined effect size of the researches obtained was 0.53. In addition, the role of moderating variables of the instructional approach (P≤0.05), grouping (P≤0.05), the student level of problem (P≤0.01) and the level of study (P≤0.05) was significant. The results showed that researches performed regarding the Response-to-Intervention affected the reduction of the problems of students at risk of math disorder. Also, the variables related to the intervention characteristics (intervention approach and type of grouping) and the subject characteristics (level of problem and level of study) improved the math performance of students at risk of math disorde.