Like no other text on the market, Making Content Comprehensible presents an empirically validated model of sheltered instruction. This resource includes new research, findings, and studies on the Sheltered Instruction Observation Protocol (SIOP) model, which provides school administrators, teachers, teacher candidates, and field experience supervisors with a tool for observing and quantifying a teacher's implementation of quality sheltered instruction. Making Content Comprehensible for English Learners presents a coherent, specific, field-tested model of sheltered instruction that specifies the features of a high quality sheltered lessons that teaches content material to English learners. Each of the 30 items from the SIOP model are illustrated through vignettes with "best" lessons included in the appendices for teachers and also includes "use tomorrow activities" to take into the classroom. The authors also address implementation issues and provide suggestions for success as well as how to incorporate technology into the SIOP. In addition, a ground-breaking CD-ROM with video clips, interviews of the authors, and reproducibles (e.g., lesson plan formats), etc. make this the perfect professional development resource for any grade level or content area teacher!