East Lothian Council is set to become the first Scottish local authority to trial a Canadian tool designed to measure children's development.
The Early Development Instrument (EDI) was created by researchers at McMaster University in Ottawa and is already used extensively in Canada and Australia.
In East Lothian, the system will be used to gauge children's physical health and well-being, social knowledge and competence, emotional health and maturity, language and cognitive development, and general knowledge and communication skills. This will allow local partner agencies to target services and implement early childhood interventions for infants, children, parents, families and communities.
The EDI is being introduced to the area as part of "Equally Well", the Scottish Government's framework on health inequalities.
East Lothian is an Equally Well test site and has been charged with tackling health inequalities in the early years in Prestonpans, Musselburgh East and Tranent.
The authority has already introduced targeted free meals in P1-3; redesigned oral health promotion in two communities; and introduced the school-based counselling service, the Place2Be, to six schools.