Triangle Lake School is a K-12 public school in Blachly, Oregon, United States. The only school in the 'Blachly School District', in 2006 the school earned an "exceptional" rating from the Oregon Department of Education at all levels: elementary, middle school and high school. In April 2010, the Triangle Lake School Board of Directors voted to accept the proposal of the Triangle Lake Charter School Committee to make the school a charter school. From the 2010-11 school year the school has been Triangle Lake Charter School.