The 13th International Conference on Artificial Intelligence in Education (AIED-2007) is being held July 9–13, 2007, in Los Angeles, California. AIED Conferences are organized by the International AIED Society on a biennial basis. The goal of the International Artificial Intelligence in Education (AIED) Society is to advance knowledge and promote research and development in the field of Artificial Intelligence in Education. AIED is an interdisciplinary community at the frontiers of the fields of computer science, education and psychology. It promotes rigorous research and development of interactive and adaptive learning environments for learners of all ages, across all domains. The society brings together a community of members in the field through the organization of the AIED Conferences, a Journal, and other activities of interest. The AIED conferences are the main International forum for reporting the best international research in the field of AI in Education. The conferences provide the opportunity for the exchange of information and ideas on related research, development and applications. Previous conferences have been held in Kobe, Japan in 1997; Le Mans, France in 1999; San Antonio, USA in 2001; Sydney, Australia in 2003 and Amsterdam, The Netherlands in 2005.

Each conference adopts a theme that reflects the interests of the community and its role at the cutting edge of research. The 2007 theme is: Building Technology Rich Learning Contexts that Work. The nature of technology has changed since AIED was conceptualised as a research community and Interactive Learning Environments were initially developed. Technology is smaller, more mobile, networked, pervasive and often ubiquitous as well as being provided by the standard desktop PC. This creates the potential for technology supported learning wherever and whenever learners need and want it. However, in order to take advantage of this potential for greater flexibility we need to understand and model learners and the contexts with which they interact in a manner that enables us to design, deploy and evaluate technology to most effectively support learning across multiple locations, subjects and times. The AIED community has much to contribute to this endeavour.

Here are some statistics: Overall, we received 192 submissions for full papers and posters. 60 of these (31%) were accepted and published as full papers, and a further 52 are included here as posters. Full papers each have been allotted 8 pages in the Proceedings; posters have been allotted 3 pages. The conference also includes 2 interactive events, 10 workshops, 5 tutorials, and 16 papers in Young Researcher's Track. Each of these has been allotted a one-page abstract in the Proceedings; the workshops, tutorials, and YRT papers also have their own Proceedings, provided at the conference itself. Also in the Proceedings are brief abstracts of the talks of the four invited speakers:

Roxana Moreno, University of New Mexico

Tak-Wai Chan, National Central University of Taiwan

Danaë Stanton Fraser, University of Bath in the United Kingdom

Gregory Abowd, Georgia Institute of Technology

For the first time in the AIED conference we instituted a meta-review process. Thanks to our Senior Program Committee members, this change went quite smoothly. We believe that not only was the quality of the reviewing better, but the reviewing process was more rewarding with reviewers able to see their colleagues views and, if needed, discuss differences of opinion. Thanks, also, to the reviewers who were recruited by the Senior Program Committee members to help out in this critical task.

We would like to thank the many people who helped make the conference possible. Firstly members of Lewis Johnson's Local Organizing Committee, Jihie Kim, Andre Valente, Carole Beal and Chad Lane. Our Sponsorhsip chair Art Graesser and Rebecca Campbell, our copy editor. Special thanks to Jim Greer, our AIED Society President, who made sure we stayed on schedule. The committees organizing the other events at the conference have helped to make the conference richer and broader. Young Researcher's Track, chaired by Judith Good and Kaska Porayska-Pomsta; Tutorials, chaired by Roger Azevedo and Carolyn Rosé; and Workshops chaired by Ivon Arroyo and Joe Beck.

For those who enjoyed the contributions in this Proceedings, we recommend considering joining the International Society for Artificial Intelligence in Education: http://www.iaied.org. We certainly hope that you all enjoy the AIED-2007 conference.

Kenneth R. Koedinger, Carnegie Mellon University, USA

Rosemary Luckin, University of London, UK

Program Committee Co-Chairs