These programs are intended for students who are reading one or more years below grade level, and who are struggling with a broad range of reading skills. Comprehensive Intervention Programs include instructional content based on the five essential components of reading instruction integrated into a coherent instructional design. A coherent design includes explicit instructional strategies, coordinated instructional sequences, ample practice opportunities and aligned student materials. Comprehensive Intervention Programs provide instruction that is more intensive, explicit, systematic, and more motivating than instruction students have previously received. These programs also provide more frequent assessments of student progress and more systematic review in order to insure proper pacing of instruction and mastery of all instructional components.