For the last ten years, we've worked one-on-one with students from elementary school through graduate school. No matter their age, no matter the material, when you ask what they're struggling with, students almost universally name a subject: "math," "English" or, in some instances, "school." Doubting that all of school is the issue, we then ask to see their last test. After some grumbling, the student digs down, deep into the dark, dank recesses of his or her backpack, and pulls out a balled-up, lunch-stained paper that, once smoothed out, turns out to be the latest exam.