Jennifer Himmel is the SIOP Manager at the Center for Applied Linguistics, a non-profit organization for language education research, policy, and practice in Washington, DC. She has served as a curriculum developer and research associate for the U.S. Department of Education funded project, Center for Research on the Educational Achievement and Teaching of English Language Learners (CREATE) that is investigating academic achievement of ELLs in grades 4th-8th, and as a language testing specialist for the WIDA ACCESS for ELLs® language proficiency test. She currently manages the SIOP Model professional development service line and provides technical assistance and professional development in sheltered instruction to districts and schools.