Police arrested 62 New Jersey high school seniors early Thursday morning after the students broke into their school and went nuts, greasing doorknobs, flipping tables, and pissing in the halls.

After students triggered Teaneck High School's burglary alarm at around 2:30 in the morning, police showed up and found some students hiding in the school and others continuing to trash the place. It took 10 different law enforcement agencies and several trips to get all the pranksters to the precinct.

"I've been a police officer 19 years, and this is the craziest thing I've ever seen," Teaneck Police Sgt. John Garland told NBC 4.

24 of the arrested kids are 18 years old and will have to appear in court. The rest were released to their parents.

Teaneck High School was open this morning, albeit with balloons and streamers still all over the floors. No word on whether all the grease and urine got cleaned up before first period.

[Photos: NBC 4]