WHITE RIVER JUNCTION — After recent testing showed lower levels of toxic fumes in the air, the Hartford School Board has voted to reopen 12 classrooms that Hartford High School had discontinued using. In June, air quality tests showed high levels of polychlorinated biphenyls, better known as PCBs, in classrooms located in the high school’s B wing. Hartford School District Director of Facilities Jonathan Garthwaite in White River Junction on Tuesday, Sept. 2, 2025. With the loss of 12 classrooms, Hartford School District administrators moved educators to different spaces. While they made it work, it was not ideal, Hartford High School Principal Nelson Fogg said during Wednesday night’s meeting.