He has taught undergraduate and graduate courses in multicultural education, culturally responsive curriculum development, participatory action research, and urban education. A central focus of his work involves promoting the academic achievement of youth in urban schools by addressing issues associated with educator preparation. His first book, The Latinization of U.S. Schools: Successful Teaching and Learning in Shifting Cultural Contexts, was awarded the Phillip C. Chin Book Award from the National Association for Multicultural Education. He is also the co-editor of Diaspora Studies in Education: Toward a Framework for Understanding the Experiences of Transnational Communities. Irizarry has an Ed.D. from the University of Massachusetts-Amherst.