This article examines the implementation of new special education legislation in Finland among students with significant disabilities. The data consist of a nationwide survey and field observations. In the analysis, a policy implementation framework is utilized as a theoretical lens. The findings suggest that schools and municipalities that had participated in long-term development projects had more capacity and willingness to reform special education practices substantially, suggesting that learning in one policy area can transfer to other domains across multiple levels of national and local governments. The key findings highlight the significance of professional trust as a policy instrument in implementation.

This chapter first provides a short description of the historical background and development of special education teacher training in Finland. The relationship between special education and teaching pupils with autism spectrum disorder (ASD) is covered by chronologically presenting the main events, turning points, publications, and people that have had a significant effect on the education of pupils with ASD in Finland. This is followed by a description of the organization of teacher training, in general, and the particular characteristics of teaching pupils with ASD. In the context of ASD, it is essential to examine questions concerning the link between learning as social practice and the challenges of interaction manifested in learning difficulties. The chapter ends with a description of the continuing teacher education for special education teachers in Finland.