Margarita Calderón, Ph.D., is professor emerita and senior research scientist at the Johns Hopkins University School of Education. She has conducted research, training, and curriculum development for teaching language, reading comprehension, and content knowledge to K-12 English learners. Her work has focused on effective instructional processes, two-way and dual-language programs, teacher learning communities, and professional development for schools with language minority populations and striving adolescent readers. Dr. Calderón’s research has been supported by the Carnegie Corporation of New York, U.S. Department of Education, U.S. Department of Labor, National Institutes of Health, and the Texas Educational Agency.

Since 1998, Solution Tree has worked to transform education worldwide by empowering educators to raise student achievement. With more than 30,000 educators attending professional learning events and more than 4,260 professional development days in schools each year, Solution Tree helps teachers and administrators confront essential challenges. Solution Tree has a catalog of more than 515 titles, hundreds of videos and online courses and is the creator of Global PD, an online tool that facilitates the work of professional learning communities.