Sheltered Instruction is an approach for teaching content to English learners in strategic ways that make the subject matter concepts comprehensible while promoting the students' English language development. The SIOP Protocol provides concrete examples that can enhance and expand teachers' instructional practice. The protocol is composed of thirty features grouped into eight main components. The components and features are:
- Lesson Preparation (*Content objectives clearly defined, displayed, and reviewed with the students; *Language objectives clearly defined, displayed, and reviewed with students; *Content concepts appropriate for age and educational background level of students; *Supplemental materials used to a high degree, making the lesson clear and meaningful; *Adaptation of content to all levels of student proficiency; *Meaningful activities that integrate lesson concepts with language practice opportunities for reading, writing, listening, and/or speaking.
- Building Background (*Concepts explicitly linked to students' background experiences; *Links explicitly made between past learning and new concepts; *Key vocabulary emphasized.)
- Comprehensible Input (*Speech appropriate for students' proficiency levels; *Clear explanation of academic tasks; *A variety of techniques used to make content concepts clear.
- Strategies (*Ample opportunities provided for students to use learning strategies; *Scaffolding techniques consistently used, assisting and supporting student understanding; *A variety of questions or tasks that promote higher-order thinking skills.
- Interaction (*Frequent opportunities for interaction and discussion between teacher/student and among students, which encourage elaborated responses about lesson concepts; *Grouping configurations support language and content objectives of the lesson; *Sufficient wait time for student responses consistently provided; *Ample opportunities for students to clarify key concepts in their native language as needed with aide, peer, or text.)
- Practice and Application (*Hands-on materials and/or manipulatives provided for students to practice using new content knowledge; *Activities provided for students to apply content and language knowledge in the classroom; *Activities integrate all language skills.)
- Lesson Delivery (*Content objectives clearly supported by lesson delivery; *Language objectives clearly supported by lesson delivery; *Students engaged approximately 90% to 100% of the period; *Pacing of the lesson appropriate to students' ability levels.)
- Review and Assessment (*Comprehensive review of key vocabulary; *Comprehensive review of key content concepts; *Regular feedback provided to students on their output; *Assessment of student comprehension and learning of all lesson objectives throughout the lesson.)