[Beckman] asked his fellow students at New York City's Stuyvesant High School to count how many lines they had written on their essays and to provide their scores.

Milo says out of 115 samples, longer essays almost always garnered higher scores.

"The probability that such a strong correlation would happen by chance is 10 to the negative 18th. So 00000 ...18 zeros and then (an) 18. Which is zero," he said.