The PROMISE Initiative is a six-county collaboration for English Learner Success. Partners include the county offices of education of Los Angeles, Orange, Riverside, San Bernardino, San Diego, and Ventura counties in partnership with California Tomorrow and Loyola Marymount University. Six school districts (Baldwin Park USD, Moreno Valley USD, Saddleback Valley USD, San Bernardino City USD, Escondidio Union HS District, and Oceanview Elementary SD) have joined PROMISE in a three-year pilot study to bring about transformational systemic reform to meet the needs of their English Learner students. The goal of the PROMISE Initiative, in response to the vast needs represented by English Learners in the six southern California counties, is to marshal the expertise and resources of the six counties by developing a powerful infrastructure for conducting research and development, building capacity, and providing high quality sustained support to schools, teachers, and providers.