The document summarizes 5 stages of reading development from early childhood through adulthood. Stage 1 (grades 1-2) focuses on decoding letters and associating them with sounds. Stage 2 (grades 2-3) focuses on consolidating decoding skills and reading for fluency. Stage 3 (grades 4-8) requires using prior knowledge to understand new concepts. Stage 4 (high school) includes considering multiple viewpoints. Stage 5 (college and beyond) uses reading to synthesize one's own knowledge with others'.