Many parents are disappointed by the writing skills of their children. However, they find that teaching writing is difficult as the kids don't necessarily recognize the parents' authority in this area.
Most schools just don't have the resources to give the children lots of writing assignments with appropriate feedback. Without the practice and instruction, students' writing skills do NOT improve.
Many parents look for help to teach writing. Time4Writing provides that help. It's a set of online eight week courses which gives weekly writing assignments followed by in-depth personalized feedback on the writing. Students can take courses afterschool, during the summer, or for homeschool families, whenever it fits into their schedule. Classes start almost every Monday.
Prices are terrribly reasonable for the amount of personalized instruction that each student needs. The course requirements are simply an Internet connection and a browser. The writing is done on an online system so a word processor is not even required.
In middle and high school, a methodology called Four Trait Writing is used. The first course on Four Traiting Writing is available from Time4Writing, which provides online writing courses. But there are likely to be books and other courses promoting this methodology in the near future. Time4Writing conforms to the NSTE approach to writing.