"BBC Media Action has been involved in media development since it was founded in 1999. Over the years, we have designed and deployed a broad range of evaluation approaches and methodologies to assess the impact of and learn from our work. This has generated much internal discussion: Are we measuring the right things? Where can we realistically expect to see change? How much should we spend on evaluation? How can we tell whether that change is sustainable? This paper is our attempt to bring that discussion to the wider media development community. In it, we set out our working evaluation framework and methodology alongside the findings generated by applying this framework to five different capacity-strengthening interventions." (Executive summary) The five case studies include: Noun 105.9FM, Nigeria; Oromia Radio and Television Organisation (ORTO), Ethiopia; CG FM, Tanzania; Dinesh FM, Nepal; PBC, Palestinian territories.