Calais Middle/High School Principal Dean Preston speaks in April at a School Board meeting, where he explained the district’s trial of a hall pass app first built by a Deering High School student and later developed in Maine. Photo by Melissa S. Razdrih.CALAIS — Calais Middle/High School is testing OrangePasses, a digital hall pass system by ReachMyTeach, through a free trial that could lead to full adoption in the 2026‑27 school year. The mobil…