DS's grades were split evenly between As and Bs. For each B, I asked him if he was satisfied with a B in that subject. Writing was the only B he was happy with, and the rest he said he'd like to raise (and I agreed completely).

Fortunately, I got quite a bit of mileage out of that desire when it came time to complete study guides, etc. this weekend. I'm putting a LOT of emphasis on practice and trying to teach some study skills, and I can use all the help from internal motivation that I can get!