Exclusion occurs when students are directly or indirectly prevented from or denied access to education in any form.

Segregation occurs when the education of students with disabilities is provided in separate environments designed or used to respond to a particular impairment or to various impairments, in isolation from students without disabilities.

Integration is the process of placing persons with disabilities in existing mainstream educational institutions with the understanding that they can adjust to the standardized requirements of such institutions.

Inclusion involves a process of systemic reform embodying changes and modifications in content, teaching methods, approaches, structures and strategies in education to overcome barriers with a vision serving to provide all students of the relevant age range with an equitable and participatory learning experience and the environment that best corresponds to their requirements and preferences.

Placing students with disabilities within mainstream classes without accompanying structural changes to, for example, organization, curriculum and teaching and learning strategies, does not constitute inclusion.

Furthermore, integration does not automatically guarantee the transition from segregation to inclusion.