This issue forms a special collection on Computer Assisted Assessment (CAA) and has been produced in conjunction with the International Computer Assisted Assessment Conference (www.caaconference.com offers a free downloadable archive of all previous CAA Conference papers. It includes selected papers from the CAA Conference, along with other CAA papers from across further and higher education. The variety of different papers, and the issues they explore, illustrates that CAA is now an active and established research area, which is testing both the technical and pedagogical challenges associated with developing and delivering assessment online.
Authors contributing to Research in Learning Technology retain the copyright of their article and at the same time agree to publish their articles under the terms of the Creative Commons CC-BY 4.0 License (http://creativecommons.org/licenses/by/4.0/) allowing third parties to copy and redistribute the material in any medium or format, and to remix, transform, and build upon the material, for any purpose, even commercially, under the condition that appropriate credit is given, that a link to the license is provided, and that you indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.