State and federal laws mandate that Lincoln-Sudbury assess students whose primary language is not English and to provide “sheltered English instruction” for those whose English skills significantly impede their ability to make progress in the general curriculum. Sheltered English instruction and academic support for students as they participate in their general education courses at Lincoln-Sudbury Regional High School are provided by a half-time teacher with the certification in Secondary English Instruction and ELL Instruction and a tutor with training in ELL instruction techniques for the classroom.