Transparency helps students most when they receive it before, not during, a test.

Transparency in Learning and Teaching, or TILT, clarifies the purpose, requirements, and grading criteria of school tasks. But when should teachers share this information? The question arose after a Calculus I study showed that TILT materials led to higher test scores, yet students complained that reading them during the test took away problem-solving time. The author used ideas about memory and learning to explain how this timing matters. When students read detailed explanations during a timed test, it overloads their working memory, which is their limited brain space for thinking right now. That mental clutter steals focus from solving the actual problems. Instead, the author argues that teachers should deliver these broad explanations before the exam. Sharing them early helps students organize prior knowledge, ask questions, and practice. In short, transparency works best not just because the instructions are clear, but because teachers provide them at the right moment.

Why it matters

Teachers often hand out detailed instructions and criteria during exams, assuming transparency always helps. This work shows that providing that same information before the test—not during—lets students use it to prepare without overwhelming their working memory. Getting the timing right could improve both learning and test performance without adding extra work.

Questions answered