The document summarizes case studies and presentations from the 2014 California STEM Summit about reform and innovation in STEM teacher preparation through collaborations between California State Universities and school districts. Key areas discussed include reshaping teacher preparation programs, enhancing STEM educators' skills, and strategies for empowering teachers to teach common core state standards in math and next generation science standards. Specific examples of partnerships between Sacramento City Unified School District, Fresno Unified School District, and California State Universities are presented.