Stillwater Area High School, Stillwater Woodbury High School, Woodbury Forest Lake Middle School, Lake Middle School, Park High School, Stillwater Area High School, and Woodbury High School are the most recent adds to the list. Subscribe No Washington County schools have been removed from the list since February. In order to be added to the Minnesota Department of Health's list, a school must report at least five cases of a student or staff member being inside the building while infectious and within the two-week reporting period, the department said. Subscribe If a school goes 28 days with no new cases, they are removed from the list, the department said.