The Orton-Gillingham Approach is most often associated with a one-on-one teacher-student instructional model. Its use in small group instruction is not uncommon. A successful adaptation of the approach has demonstrated its value for class-room instruction. Reading, spelling and writing difficulties have been the dominant focus of the approach although it has been successfully adapted for use with students who exhibit difficulty with mathematics.
The Orton-Gillingham Approach always is focused upon the learning needs of the individual student. Students with dyslexia need to master the same basic knowledge about language and its relationship to our writing system as any who seek to become competent readers and writers. However, because of their dyslexia, they need more help than most people in sorting, recognizing, and organizing the raw materials of language for thinking and use. Language elements that non-dyslexic learners acquire easily must be taught directly and systematically.