This study concentrates on the work of special education teachers in mainstream education in Finland, where these professionals work with children from various classes, usually in a separate room. The research reported in this article by Marjatta Takala of the University of Helsinki, Raija Pirttimaa of the University of Oulu and Minna Tormanen, who is studying for her PhD at the University of Helsinki, involved sending a questionnaire to 133 special education teachers and undertaking observations. The work of the special education teachers was revealed to consist of three elements: teaching, consulting and background work. Teaching, often focusing on giving support to children who had challenges in the main academic subjects, was realised in small groups, in co-operative or individual settings. Consultation mainly concerned co-operation and discussion. Behavioural challenges needed a targeted approach. The main problems experienced by the teachers were the lack of time for consultation and co-operation, an unclear work profile and too much work. The work of special education teachers was partly inclusive, but also entailed segregative elements. The authors discuss the potential for promoting further steps towards inclusion as well as possible changes in organising special educational provision at school level.