Mesa County Public Health believes norovirus is to blame for the sick students and staff. The primary symptoms are vomiting and diarrhea.
Elementary and middle schools had an in service teacher day on Monday. They will open to students on Tuesday.
The first to close, Palisade High, was more than two weeks ago on Nov. 14. In that time, the schools were disinfected.
“Custodial crews have devoted many hours to disinfecting each and every building over the break. Let’s help make sure their hard work does not go to waste and keep each other healthy!” the school district stated on Sunday.