Text stimulus (illustration): Split classroom doorway illustration. On the door, show a large sign reading "Be prompt. Be prepared. Be professional." Under the sign, show three simple icons in a row: a clock, a pencil case with notebook, and a clipboard rubric with check marks. Shown: part of a classroom interior through the doorway, with no people. A classroom doorway sign says "Be prompt. Be prepared. Be professional." It shows a clock, a pencil case, and a rubric clipboard. Which hidden-curriculum lesson is strongest?