The third annual Workshop on Educational Interfaces, Software and technology, associated with CHI 2012, aims to combine "the pedagogical expertise of the cooperative learning, and learning sciences communities with the technical creativity of the CHI, UIST and interactive surface communities."
Held May 5-6, You may have just missed it this year, but the papers are now online, and keep your eye on this workshop, as they plan to make it a conference within two years.