Presentations at the California Educational Research Association conference on November 29th and 30th highlighted work done by the California Collaborative. Over the past four years, the Collaborative has documented a learning partnership between Fresno and Long Beach Unified School Districts and is beginning a study of an emerging mentoring relationship between Garden Grove and Oakland Unified School Districts. Stephanie Hannan of the American Institutes for Research presented findings from the documentation of the Fresno-Long Beach Learning Partnership and Joel Knudson, Deputy Director of the Collaborative, discussed lessons from the Garden Grove and Oakland relationship. Soung Bae, Director of Research and Learning at California Education Partners, discussed the California Office to Reform Education (CORE). CORE is an organization which seeks to raise student achievement by promoting collaboration and learning between its eight member districts, seven of whom are also members of the Collaborative. Helen Duffy, task leader of the documentation of the Fresno-Long Beach Learning Partnership, synthesized lessons across these three instances of district collaboration.