OCOEE, Fla. -- The Orange County School District said a fan in the main office of Citrus Elementary School on North Clarke in Ocoee started an overnight fire that shuffled students around. As a result, walls were scorched, floors were flooded and computer equipment destroyed.

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SLIDESHOW: Sprinklers Flood School After Small Fire

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"It's moderate water and smoke damage," said Div. Chief Butch Stanley of the Ocoee Fire Department.

Around 450 third, fourth and fifth grade students left Citrus Elementary on Wednesday morning. They boarded buses bound for Ocoee Middle School. Kindergarten, first and second grade students stayed for class in on-campus portable buildings.

The school district said it notified parents using the "Connect-ED" mass voicemail system overnight about the changes they put in place for Wednesday after the overnight fire.

Crews worked throughout the morning to clean up the mess from the fire and a sprinkler that stopped the fire from spreading away from a charred wall.

"With a simple little fire, that did exist, one sprinkler head flooded the entire first floor around the office area," explained Nick Gledich, Orange County School District.

District officials worried the smoke and fire damage could have meant a health hazard. Ocoee Mayor Scott Vandergrift said their plan worked.

"It could have been much worse," he said.

A number of parents Eyewitness News talked to agreed. While only a few didn't get the message and some were still concerned about their kid's health, most favored the actions taken Wednesday.

"It's good for the kids to know it's real, just in case something happens, meet their teachers at their fire drill spot as well," said parent Wanda Whitehead.

Most just hope it won't happen again Thursday.

"Hopefully it's nothing more than a day," said parent Cynthia Carter.

The school's principal plans to update parents with another mass voicemail Wednesday evening. The district said the school expects to be fully open Thursday.