In this issue of the XChange we bring together the voices of teachers, researchers, teacher educators, pre-service teachers and community activists engaged in the struggle to bring Ethnic Studies classes to K-12 students in California.

This issue of the XChange focuses on the research, practice, and policy associated with teacher collaborative inquiry, based on the 75 Teacher Initiated Inquiry Projects (TIIP) that UCLA Center X facilitated in an ambitious grant program to support collaborative teacher inquiry.

In this issue of XChange, UCLA faculty, alumni, and students share their work to document and advance teaching that builds on the cultural assets and respects the strengths of all learners.

In this issue of Center XChange, members of Center X share their research, anecdotes, and professional development around teacher leadership, focusing on these areas: 1) Research on how and why teachers choose teacher leadership pathways 2) Examples of teacher leadership
3) Protocols and tools teacher leaders can use.

In this issue of the Center XChange, we assemble a diverse set of perspectives on ways to capture teacher quality using multiple measures which can be used to evaluate teachers and guide their professional development.

This issue of Center XChange focuses on language issues in education and addresses the question “What does language have to do with the success or failure of students in urban schools?”

In this issue of Center XChange, we focus on the importance of engaging new media and technology through critical media and techno literacies that aim to empower students as active participants in society.

In this inaugural issue of the Center XChange, we share highlights of our work at Center X and the lessons we have learned over the past 15 years in our work to transform public education.