The state Department of Education concluded in its final environmental assessment Wednesday.
The state-funded project will modernize the high school campus. Work could begin late 2016.
The new 13,000 square feet of new classroom buildings include a physical science lab building, biochemistry lab building, natural resources building and a general classroom building. The current science classroom will be renovated to create a new faculty center to include a work/meeting room, lounge, storage and two restrooms. The existing faculty center will be used as office space.