How community-based early childhood programs can impact child development

250 million children under the age of five in the developing world are failing to reach their full development potential. Faced with this challenge, governments and donors across the globe have turned to early childhood education and development (ECED) services. These are a cost-effective way to overcome the developmental losses associated with growing up in a disadvantaged environment. The services can be delivered in different ways, such as through kindergartens and community-based playgroups.
But how effective are these, in practice?