Upper Canada District School Board

The Upper Canada District School Board (UCDSB), known as English-language Public District School Board No. 26 prior to 1999 ) is one of the largest public school boards in Ontario in terms of geographical area, spanning 12,000 square kilometres. It encompasses the counties in the easternmost portion of the province, including the cities of Brockville, Clarence-Rockland, Carleton Place, Cornwall, and Akwesasne. It covers most of the area surrounding - but not including - the city of Ottawa. Trustee elections are held every four years to elect new trustees.

The board manages a main office in Brockville and four regional education centres, and offers alternate and continuing education at over 30 locations.

Secondary & Elementary Schools
Secondary school enrollment (according to data from the Ontario Ministry of Education's School Information Finder service) and Fraser Institute provincial rankings are as follows:

Additionally, the Board operates the Eastern Ontario Education and Training Centre in Hawkesbury, along with Conseil des écoles publiques de l'Est de l'Ontario and the Conseil scolaire district catholique de l'Est ontarien.