In a perfect world, students might be judged by their ideas alone -- not by whether they write "you're" or "your." But that isn't the world we live in.It happens every time. As I hand the test out to my middle school students, one of them will invariably look up, pencil at the ready, and ask, "Does spelling count?" Let's ignore the fact that my students should know better than to even ask this question in the first place. I've answered it more times than I care to remember, usually in the fall of the new school year, and it...