Cameron Diaz stars in Columbia Pictures’ comedy “Bad Teacher.”

Normally we assume when a thief finishes stealing something, he or she would hurry away from the scene of the crime. However, that wasn’t the case for a 22 year-old man who left a snarky note on a blackboard after ransacking school property, asking students not to believe things taught by teachers.

According to a report by Southern Capital, a man surnamed Li from southwestern Sichuan Province stole cash, ID cards, hundreds of euros and other property worth of thousands of yuan from about 80 classrooms from three different high schools last year.

We don’t know if miserable school memories prompted him to leave a note on one of the classroom’s blackboards, but he obviously took his time to write, “All that is taught by teachers is wrong. Self-study is the key.”

Most of the classrooms were not locked and students’ valuable items were loosely put on their desks, which made the schools easy targets, the report said. The thief was finally arrested in Nanjing after being caught on security camera.

He’s been sentenced to four years and three months in jail by a district court in Guangzhou.