WestEd is a research and development company that provides various related services. Based in Phoenix, Ariz., the firm helps its clients assess students knowledge of science, develop mentoring programs, create standardized assessments to inform instruction and improve programs for English learners and students with disabilities. The company offers its vast client base an array of services that include assessment, standards/accountability, culture, diversity and equity, evaluation, school/district improvement, special education, technology and information services and many more. In addition, WestEd provides a host of programs, such as center for child and family studies, evaluation research program, innovation studies, teacher professional development program and health and human development program, among others.