"Inclusion is not confined to the disabled but it also mean no exclusion of…

Concept: Educational policy distinguishes ‘integration’, which places children with disabilities into an otherwise unchanged mainstream classroom, from ‘inclusion’, a broader principle requiring the whole school system to be restructured so that no child — regardless of disability, gender, caste, language, or economic background — is excluded from schooling.

Application: The quoted statement — that inclusion is not confined to the disabled but means no exclusion of any child — is the exact formulation used by the National Curriculum Framework (NCF) 2005 to widen India's understanding of inclusion beyond disability-only accommodation to a whole-system, whole-child principle.

• NCERT develops and publishes curriculum documents, including NCF 2005, but it is the framework document itself — not NCERT as a generic institution — that is credited with this specific definitional statement.

• UNESCO's international declarations promote inclusive education worldwide, but this particular formulation used in Indian teacher-education material is not attributed to a UNESCO document.

• UNICEF works on child rights and welfare globally, but it is not the source credited for this specific curriculum-policy definition in the Indian context.

Hence, the source that clarified this meaning of inclusion is NCF 2005.