The Impossible Zero

When Blair saw the zero, she was stunned.

How could it be zero?

During the exam, Blair had glanced several times at Cecelia, who was writing the answers confidently. Even if she hadn't performed well, there was no way she would have received a zero.

Moreover, Cecelia's exam score on the first day had been excellent. How could it suddenly drop so drastically on the second day?

Something was definit