The Opportunity:   The Multilingual Programs at Mastery Schools are built on the belief that native language skills are a true asset and transfer to secondary language learning. Based on this, students receiving ELD services are taught social & instructional language in tandem with academic language of Language Arts, Math, Science, and Social Studies throughout each stage of English proficiency.  ESL teachers work with our multilingual learners to build students’ language capacity, gain greater levels of access to the curriculum and bridge students’ prior learning and experiences into English-instructed classrooms and school environment.   Mastery values the langu