(a) The state departments of health, human services and education shall enter into a collaborative agreement for the purpose of developing a statewide plan of coordinating comprehensive, multidisciplinary interagency programs providing appropriate early intervention services to all developmentally delayed and at-risk children, ages birth through five years, and their families to be phased in by the school year 1990-99.
This comprehensive, coordinated statewide plan shall include, at a minimum:
(1) Specification of the population to be served;