Over the past decade, international and national education agencies have begun to emphasize the improvement of the quality (rather than quantity) of education in developing countries. This trend has been paralleled by a significant increase in the use of educational assessments as a way to measure gains and losses in quality of learning. As interest in assessment has grown, low-income countries have begun to adopt and adapt international and other assessments for a variety of uses, including the comparability of national quality with other countries, improved ways of measuring reading achievement, and further attempts to reach marginalized populations within a country. The present group of papers provides multiple perspectives on the debate currently underway about the best approaches to create and use learning assessments in low-income countries. (Contains 7 figures and 9 notes.)