The study highlights Special Education as a comprehensive teaching modality, which encompasses all levels, stages and educational modalities. It focuses on Specialized Educational Assistance (AEE), providing resources, services and guidance to improve the teaching and learning process in regular classrooms. According to educational policy, Special Education must be implemented in all teaching contexts, aiming to serve students with disabilities, pervasive developmental disorders (TGD) or high abilities/giftedness.The current approach emphasizes the coexistence and collaboration between Special Education and regular education, moving away from the previous substitutive vision. In this sense, the responsibility for the education of students with disabilities, TGD or high abilities/giftedness is shared between the regular class teacher, responsible for the curriculum, and the teacher specializing in AEE, responsible for creating conditions that meet the specific needs of these students. This approach seeks to overcome barriers to promote inclusive education, ensuring not only access and retention, but also the effective learning of these students, integrating them in a meaningful way in common classrooms. From this new perspective, Special Education is no longer seen as a substitute alternative to regular education, taking on a complementary or supplementary role. This implies a change in the understanding of the role of the specialist teacher, who now works together with the regular class teacher to ensure inclusive and effective education.