They came from different testing rooms, different testing sites. But the first digits of each student ID matched perfectly, pointing to the same school, the same class.

A chill crawled up the supervisor's spine. He grabbed his radio.

"Tech team. Run a search across every answer sheet in the city. Filter for non-approved ink color. Now."

Seconds later, the reply came back, shaken:

"Sir... the search is done. Thirty-seven answer sheets. Every one of them scored on the multiple choice. Every written-response section and every essay, zero."