Masks in schools could be a fixture until the end of the year. Parents have lobbied the Teton County School District No. 1 Board of Trustees on both sides of the issue, but in the end the district doesnât have much say in the matter. State requirements decide when the district can apply to lift the school mask mandate, and so far the COVID-19 numbers do not allow that. Even though the Teton County Health Department has moved the county to the âgreenâ risk level, the state lists it as being at higher risk when it comes to masks in schools.