This reminds me of a test we did in grade 7 to teach us to read through everything carefully.
So basically the teacher gave us all a test and it had the most random questions on it (like what is a non-wizard called in Harry Potter and things like that) and then right at the end of the test it casually said "turn your paper over and don't write anything" (it was a test to see if we would quickly look through the test before diving straight into it). The teacher called time before anyone had the opportunity to get to the last question if they were doing it in order, and only about 2 or 3 girls actually read through and didn't write anything
So basically the teacher gave us all a test and it had the most random questions on it (like what is a non-wizard called in Harry Potter and things like that) and then right at the end of the test it casually said "turn your paper over and don't write anything" (it was a test to see if we would quickly look through the test before diving straight into it). The teacher called time before anyone had the opportunity to get to the last question if they were doing it in order, and only about 2 or 3 girls actually read through and didn't write anything