In many countries of the world, agricultural extension services are shifting from the public to the private sector. Services are thus being contracted out, to improve the financing and delivery of agricultural knowledge.The book presents a range of case studies from Australia, Bangladesh, Chile, China, Germany, Mozambique, USA and others, that are presented to demonstrate the range of approaches. Topics covered include off-loading public sector extension delivery services, contracting to improve environmental services and farmers contracting for commercial advisory services.This volume presents work developed by the Agricultural Knowledge and Information Systems (AKIS) Thematic Group of the World Bank, in collaboration with the University of Maryland, to examine contracting for extension services.