- CIERA School Change Project
- ClassWide Peer Tutoring
- Cognitive Tutor® Algebra I
- Cognitive Tutor® Algebra II
- Cognitive Tutor® Geometry
- Cognitive Tutor® Integrated Math I
- Cognitive Tutor® Integrated Math II
- Cognitive Tutor® Integrated Math III
- Community of Caring®
- CompassLearning
- Compensatory Language Experiences and Reading Program (CLEAR)
- Comprehensive Curriculum for Early Student Success (ACCESS)
- Computer Curriculum Corporation (CCC)
- Computer Managed Mastery Learning
- Computer-aided instruction (CAI)
- Concept Phonics Fluency Set
- Concept-Oriented Reading Instruction (CORI)
- Connect with Kids
- Connected Mathematics Project (CMP)
- Connecting Math Concepts (CMC) mathematics program
- Consistency Management®
- Cooperative Integrated Reading and Composition® (CIRC®)
- Coping Power
- CORD Applied Math
- Core Knowledge Curriculum
- Core Knowledge Language Arts Knowledge Strand
- Core-Plus Mathematics
- Cornerstone Literacy Initiative
- Corrective Reading
- Countdown Video IGAP Intervention Tape
- Crossties
- Curiosity Corner
- DaisyQuest
- Davis Learning Strategies Program
- Des Moines Plan
- Destination Math
- Destination Reading
- Dialogic Reading
- Different Ways of Knowing
- Digi-Block® Learning System
- Direct Instruction
- Direct Instruction and CIRC
- Direct Instruction/DISTAR
- Direct Instruction/DISTAR and Success for All
- Direct Instruction/Horizons
- Direct Instruction/RITE
- Direct Instruction/Spelling Mastery
- Direct Instruction/SRA
- Direct Instruction/Teach Your Child to Read in 100 Easy Lessons
- Direct, Intensive, Systematic, Early and Comprehensive (DISEC) Instruction
