If a school has to close it's doors because too many kids are sick, you know it's pretty serious.

According to WNEM, Faith Lutheran School in Bay City will be closed on Friday, Feb. 3 because around 30 percent of their kindergarten-through-8th graders are out for a variety of illnesses.

Students are ailing from stomach flu, high fever and respiratory problems.

Schools in Genesee County have had the same issues with sick kids but not to the point where they needed to shut down for the day.