Neligh-Oakdale school started two hours late Thursday after a flood in the basement of the school.
10 inches of standing water was discovered at the school around 10:15 p.m. Wednesday night.
Superintendent Kim Lingenfelter says a large amount of rain rolled down into the window wells, causing them to burst.
The flooding affected five classrooms, but they're taking steps to get everything back to normal.
"We've got huge fans down there. Most of the sludge is removed. We're going to have a crew come in then and disinfect again, just to make sure that everything's clean and hasn't decided to go somewhere where it can't get out," said superintendent Kim Lingenfelter.
Lingenfelter estimates at least $10,000 in damages to equipment.
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