Child to Child is an approach to health education of the primary school-age child. In developing countries, infants and young children spend much of their lives in the care of an older brother or sister. Morley, a paediatrician, saw the potential of teaching these older children to provide better care for their siblings. Working with colleagues in education, Child to Child was launched in 1978, the International Year of the Child. Teaching material was prepared covering developmental needs, nutrition, common illnesses and aspects of the environment; a book was published describing an activity-oriented teaching method. This material was distributed to developing countries world-wide, with encouragement to use the material and ideas freely, adapting, translating, or innovating as found useful. Child to Child is now in use in 60 or more countries, and in at least 15 languages. It is being used by agencies like the World Bank, UNICEF, UNESCO, and OXFAM as a way of reinforcing community education in the search for 'Health for All by 2000'. A world-wide review of Child to Child is in hand. Information from this will help to provide firm guidelines on implementation in the different contexts where its value has already been established.