GREEN BAY, Wis. (WLUK) -- As Southwest High School Principal Rod Bohm walked into work Thursday, he had no idea what was in store.
"I came in about 6:20 this morning and I see a bunch of tables that were stacked up all the way around," Bohm said.
Senior Zak Nelson was waiting to see Bohm's reaction.
"He was just like, no words, very out of it. He just kept saying, 'oh my gosh, oh my gosh,'" said Zak Nelson.
"I wasn't mad. I like to have things organized. It took me out of my comfort zone at first but then I realized where the spirit of this lied and so it was a lot of fun," Bohm said.
The disorganization also came in the form of balloons in the principal's office.
"There are 700 balloons and streamers that filled my office so that took me to another level of uneasiness," Bohm said.
So until the end of the school day, Bohm's office was in the lunchroom.
"When you're sitting in your office with 400 kids and teachers walking through, it's hard to get work done," Bohm said.
Senior Clara Welhouse hatched a plan to prank Bohm.
"I found some inspiration online for some pranks," said Clara Welhouse.
And, she enlisted the help of about 40 seniors.
"It went so much better than I thought it would. Honestly, especially the balloons in the office. That was not part of my plan. It was something that just happened," Welhouse said.
As for all of these balloons in Bohm's office, he says he has a plan for the seniors who put them here.
"They may not get their diploma on Sunday after the graduation ceremony. They might have to come for lock in and find it underneath the balloons in my office," Bohm said.
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Jokes aside, Bohem says the class of 2018 is pretty special and some seniors say the same about him.
"We really do appreciate him. He's one of the nicest guys you'll ever meet," said John Gahnz, Southwest High School senior.