Special needs educational policies of Sri Lanka have been implemented to ensure right to education of differently abled students, but there are still lacking points. Therefore, providing a quality education to differently abled students in Sri Lanka is a policy challenge. In this background, this study contributes to explore implementation of special needs educational policies in Sri Lanka on protecting the right to education of differently abled students with special reference to Tangalle educational division. The conceptual framework of this study is based on right to education and 4A's concept which was coined by UN special rapporteur on the right to education Katarina Tomasevski. She emphasized Available, Accessible, Acceptable and Adaptable as the key pillars of right to education. Therefore, these 4A's were used as independent variable and the ensuring the right to education of differently abled students as a dependent variable of this study.