In recent years, classrooms across Massachusetts and the United States have welcomed large numbers of English learners (ELs), students who are learning English in the context of school. ELs require effective content instruction to achieve academic success as they prepare for their futures in the modern 21st-century global economy. Research-based strategies for supporting ELs are practiced and analyzed and students will have opportunities for feedback and reflection. Upon successful completion of this course, participating teachers receive the Sheltered English Immersion (SEI) endorsement. Regardless of modality, this course requires at least 45 hours of synchronous instruction. Pre-practicum field experience is required.