Their writing skills are significantly below what is normal considering the student's age, intelligence, and education. The poor writing skills cause problems with the student's academic success or other important areas of life. As measured by functional assessment or by a standardized test that is given individually, the patient's writing ability is substantially less than you would expect considering age, intelligence and education. The difficulty with writing grammatically correct sentences and organized paragraphs materially impedes academic achievement or daily living. If there is also a sensory defect, the writing deficiency is worse than you would expect with it.
Some disorders have similar or even the same symptoms.
Children that have disorder of written expression have trouble in spelling, errors in punctuation, errors in grammar, and poor handwriting. These abilities are generally critical for success in school and college. This disorder appears by itself or in conjunction with other learning disabilities. Although educators attempt to intervene, there is no proven effective treatment for the disorder of written expression. Emphasis on the remedial teaching of writing and a heavy emphasis on student practice of writing may be helpful.