Not with timed tests. I freeze up and stare at the clock. When I was in college, I had to have special accommodations. They would take me and put me in a room by myself, and it was understood that I had literally all day to finish. That was the only way I could focus on the test.
When I was in high school, I did a bit of research in the library and discovered that if you answered a multiple choice test by selecting A,B,C,D sequentially throughout the test, that you'd score between 55 and 62% on average. This is because the law of averages dictates the average time the letters B & C are used for the correct answer to a multiple choice question test.
I was an athlete in high school and didn't have time for academia, so when I went in to write a text, even a mid-term exam, I would always sequentially answer A, B, C, etc throughout the test and would always be the first one to stand up and hand in my test and walk out of the class, waving goodbye to the suckers who'd otherwise sat up studying all night.
I always ended up with a 'C' average in everything except 'creative descriptive writing' and I never opened a book all through high school to achieve that 'grade average' of a 'C'!
The funny thing was, my Dad was always very proud of my test results, yet he somehow knew that I was cheating to get a whopping 'C' average on my report cards each year! 😁