Inclusion is seen as a process of addressing and responding to the diversity of needs of all learners through increasing participation in learning, cultures and communities, and reducing exclusion within and from education. It involves changes and modifications in content, approaches, structures and strategies, with a common vision which covers all children of the appropriate age range and a conviction that it is the responsibility of the regular system to educate all children.
Source: UNESCO 2005, Global

(Social inclusion) The conditions and processes whereby an individual or a population group is granted access to benefits or beneficial circumstances, including those related to education and training.
Source: ILO 2006, Global

(Social inclusion) The integration of individuals – or groups of individuals – into society as citizens or as members of various public social networks. Social inclusion is fundamentally rooted in labour market or economic inclusion.
Source: CEDEFOP 2008, Europe