My DS10 was taking a practice test for his upcoming achievement tests and it had the question
What is a way humans do not use dirt? (I'm going to make up some of these as I can't remember exactly)
a. to build houses
b. for growing food
c. as food to eat
d. for potting plants
Well he made an "e" with a none of the above as we had recently discussed how children in Haiti are eating dirt cookies these days because they don't have enough food to eat. I explained he had to go for the answer he knew they were looking for regardless of what extra information he knows. I do think this is why these kids sometimes don't do well on these types of tests, they know more than what they're "supposed" to know at this age.
