What passthepotatoes said.
If you are planning to send him to college, the more fluently he writes, the more successful he will be. Writing is a core skill that makes the difference between college students who get As and Cs-- some of the Cs are just as bright as the A kids, but didn't get good training in writing and can't produce the level of work required.
DeeDee
Thanks DeeDee, if there is a specific curriculum or method you could recommend for writing I'd love to hear it. I wish I had the experience to do it without a curriculum but I know he will need to be a stronger writer than I am, and he really likes to have a method or formula to build upon. I appreciate your thoughts!
