This thesis deals with the legal-historical development of the right to education for people with disabilities and especially with the associated change from an integrative to an inclusive education system. The focus here is specifically aimed at the primary school level. After a brief explanation of the terms disability, integration, inclusion and education, the legal framework on international, European and national level is discussed in more detail. The focus of this thesis lies in Article 24 UN Convention on the Rights of Persons with Disabilities, which for the first time explicitly committed to the creation of an inclusive education system. Furthermore the enforcement and implementation of the UN Convention on the Rights of Persons with Disabilities and also the translation difficulties are discussed. Finally the latest developments in Austria and especially in Carinthia for the creation of an inclusive school are presented.