It's important not to try too hard. Or at all.
When I was in high school, I was sitting there in European history class. The teacher handed out a test. There were a number of questions typed on a sheet and we were supposed to write little essays, which I did, obviously.
But, sitting next to me was this kid who was writing his "essays" in tiny print in the space between the lines on the sheet.
Later, when we got the tests back, he got a better grade than me.