Thank for all the responses. I feel I am not alone when facing parenting obstacle. That's why I love this place.
DS did work faster and was happier when using computer to write. Editing is much easier and he usually got frustrated to erase/rewrite sentences. Topic is another issue. He preferred to write some facts than his experience/opinion. His writing is more like a user manual or a notetaking but not a journal. I will start trying to guide him to practice more. I don't think he got enough instruction at school. Teacher only wanted the 30 students get the job done. If anybody knows some good books for me to read or for my son to practice, that will be very helpful.
About the evaluation, it's a time and money consuming process. I will do it if no way to help. I wonder full evaluation is necessary or the test is based on the problems you have.
