Validation of the model for evaluating academic progress in multi-grade classes in elementary schools

Ph.D student in Educational Studies, Lamerd Branch, Islamic Azad University, Lamerd, Iran

Associate Professor, Department of Educational Studies, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran

Professor, Department of Educational Studies, Lamerd Branch, Islamic Azad University, Lamerd, Iran

Assistant Professor, Department of Educational Sciences, Lamerd Branch, Islamic Azad University, Lamerd, Iran