This document brings together the findings of a literature review of current thinking about children’s participation and its evaluation with a field study undertaken in three different countries (Ecuador, India and Kenya). It is also enriched by discussion at a one-day conference in London in November 2003, which was hosted by Plan UK to review findings from the research. The process leading to the production of this document began in March 2003 at a one-day seminar hosted by Plan for the UK development community, entitled Children’s Participation in Development – Challenges and Ways Forward. Participants at the seminar identified a clear need for further thought about the evaluation of children’s participation. Since then, delegates at a global meeting of the Save the Children Alliance have expressed a similar view.