"We're keeping track of what the kids' skin looks like," said Kim Delmonte, a mother of a student at Northside.
"We're trying to remind her to keep her hands washed and out of her mouth," said Christine Wozny, another concerned mother.
Parents at Northside are getting a refresher on good hygiene. They had to after receiving a letter notifying them a student had the staph infection known as the "superbug." And then, the school started cleaning.
"We cleaned everything that could have been contaminated," said Principal Carolyn Shea, "classrooms, we did gym locker rooms, cafeteria, library, all chairs and table surfaces and floors."
And she got help from all over town.
"It was all hands on deck," Shea said. "The district provided additional cleaning crews coming from other buildings across the district. It was a massive effort with lots of people here."
Most parents brought their children to school with few worries.
"A lot of it is just keeping your hands washed," said Zack Wood, a father. "It (the infection) has to get into a cut, and I think that they're (the school) taking precautions."
Shea says the student who was infected is doing well and that student should be back at school "in the near future."