This thesis will present the process of development of an autistic girl during her second year of primary education. Her progress regarding her educational achievements had been studied, but even more important was her progress regarding her social skills. The goal was to spot the changes, supposing they were possible, and the methods and approaches by which they were achieved. Many positive changes were noticed. The girl had learned a lot through various educational fields, but she had also learned the important patterns which form the foundations for appropriate behavior and progress in communication and in general, socials skill that she acquired through subjects that are part of the non-educational field. However, these changes resulted from great effort and adequate preparation of the teacher, whose work was supervised, followed and advised by a therapist, and from excellent connection and cooperation with the girl's parents. By means of various methods and approaches, and by creating a close relationship, the teacher succeeded in developing an interest in the girl for her surroundings and the desire for acquiring curriculum content. Therefore, it has been concluded that the progress of an autistic child during primary education is possible providing that the teacher is interested in and is ready for cooperation with parents, continuing education and consultations with a professional – therapist, so that he or she would know and be able to react in various situations and challenges that can come up when working with an autistic child.