The quality of the learning process of students with disabilities is important for the teacher. The teaching profession requires a high level of competence in the subject areas. the professions they teach, quality pedagogical-psychological and andragogical education and readiness for lifelong education. One of the important attributes of effective teachers is their ability to adapt lessons to different student characteristics. Children with special needs need effective didactic aids and personalized equipment for effective learning and successful involvement in the elementary education process. The key to achieving the learning goals and standards of knowledge set out in the syllabus is the implementation of internal learning differentiation and individualization, which means a deliberate derivation of didactic-methodical and educational content differentiation and individualization. The teacher of a child with special needs should be able to work together with other professionals in finding common solutions, as this is the only way to find the most effective form of work with these children.In the empirical part, both quantitative and qualitative research will be conducted. The purpose of the research is to study and analyze the experiences of teachers in the implementation of didactic-methodical differentiation and individualization. We are interested in teachers' experiences in combining and modifying teaching methods and forms, and in implementing various didactic strategies. We also want to gain insight into the individualization of the learning process by using different teaching aids and aids. We are interested in the experience of cooperation between professional staff at elementary schools with a tailored program in Slovenia in terms of the implementation of didactically methodical differentiation and individualization, and the assessment of teachers as to their competence to perform didactically-methodical differentiation and individualization. We will find statistically significant differences in judgments, grades and opinions with regard to the workplace of teachers at these schools and over the years of service. From the survey of research in Slovenia, we found that this kind of research in Slovenia has not yet been conducted. The data will be obtained by means of a survey questionnaire, which will be formulated on the basis of literature review and research in the field and interview. Survey data will be analyzed with the SPSS statistical program. Data obtained through interviews will be analyzed according to the principles of qualitative methodology. The results of the research will assist in the planning and evaluation of programs of professional assistance to children with special needs.