A 22-year-old undercover cop was posing as a high school student for the past eight months, and he recently arrested 12 Exeter Union High School students in central California for selling drugs at school, according to the Visalia Times-Delta.

Students in the school were shocked to find out their friend, who was known as "Johnny Ramirez," was actually a police officer.

"I came from a private school where we were never on lockdown. Just being on lockdown is scary, not knowing what is going on," 17-year-old senior Lance Rowell told the news source. "I sat next to Johnny Ramirez in three classes. We really got to know each other. I can't believe it."

Ramirez's real name is not being released as of yet, the police officer graduated from the police academy and immediately went undercover. He put on his police uniform for the first time this week.

In an unlikely coincidence, a movie hit theaters today titled "21 Jump Street," which is a comedy starring Channing Tatum and Jonah Hill about two undercover cops who go to a high school to find out about recent drug use, according to The Huffington Post.