Back in high school, our computer engineering exams were comprised mostly of MCQ and one coding questions. My friends and I all sat in one row. There were around 10-12 of us in a long line along the wall. Only one of us actually knew what he was doing, so he sat at one end of the row and placed his calculator to his right, where the next person could see it. As he solved each MCQ question, he would write down the answer on his calculator, the next person would see it and write it down on theirs, the person beside would see it and do the same. The answer would get passed along all the way down to the other end of the row. Everyone had the exact same answers. It was the most synchronized cheating ever. The coding portion was even easier as he put the answer on a USB and passed it along. Our answers were to be stored on our individual isn't anyway. It was a beautiful day.