Sahtu Divisional Education Council None ｜ NT Board Information Schools in Sahtu Divisional Education Council 5 schools. Chief Albert Wright School Tulita | Grades K-12 Chief T'Selehye School Fort Good Hope | Grades K-12 Colville Lake School Colville Lake | Grades K-12 Mackenzie Mountain School Norman Wells | Grades K-12 Ɂehtseo Ayha School Délı̨nę | Grades K-12