The project ENABLIN+ is an international partnership for the period of 01/01/2014 to 31/12/2016. It's addressed at the needs of children and youth with complex and intense support needs (CISN), their caregivers and supporters. It wants to develop a system of interdisciplinary in-service training, where professionals and parents of various professional backgrounds learn together, with the aim of improving inclusion, promoting de-institutionalisation and enhancing quality of life of the children with CISN, at various age levels. Enablin+ promotes an inclusive intervention, not only in social life but also in education. In this article we use data collected with the "Questionnaire for professionals working with children and young people with permanent SEN". This questionnaire was available on the Internet through Limesurvey platform, and was answered by 208 professionals, including 105 teachers. The main purpose of the present work was to characterize teacher's perceptions about the training needs of the professionals working with children and young people with complex and intense support needs. Qualitative analysis of answers indicated that the most frequently mentioned topics were: Special education, Intervention strategies, ICF, Educational legislation, Family support/intervention, Developmental psychology, Adapted curriculum, Differentiated assessment. Concluding, according to teachers, training should focus on specific contents, be for everyone (professionals and nonprofessionals), and have as an objective to improve practices.