A student in the Peabody-Burns school district was sent home with a possible case of scarlet fever.
The bacterial infection starts with a fever, sore throat, and a red rash that makes skin feel like sand paper.
The Center for Disease control said the infection is treatable with antibiotics.
USD 398 said the case is unconfirmed. The district had a similar case in the elementary school last month.
Tim Robertson, Junior and Senior High Principal, sent a note home to parents Tuesday. He urged families to seek medical care if students are suffering from similar symptoms.