UNESCO defines inclusive education as a process of strengthening the capacity of the education system to reach out to all learners and can thus be understood as a key strategy to achieve Education for All. As an overall principle, it should guide all education policies and practices, starting from the fact that education is a basic human right and the foundation for a more just and equal society.
Source: UNESCO 2009
Inclusive schools are based upon a child-centred pedagogy capable of successfully educating all children, including those who have serious disadvantages and disabilities. The merit of such schools is not only that they are capable of providing quality education to all children; their establishment is a crucial step in helping to change discriminatory attitudes, in creating welcoming communities and in developing an inclusive society.
Source: UNESCO, 1994.
(http://www.ibe.unesco.org/en/glossary-curriculum-terminology)