Catholic District School Board of Eastern Ontario
# Catholic District School Board of Eastern Ontario

The Catholic District School Board of Eastern Ontario administers Catholic education for children up to grade 12, in the easternmost counties of Ontario, Canada (an amalgamation of Lanark, Leeds and Grenville, Prescott and Russell, Stormont, Dundas and Glengarry) including the cities of Brockville, Clarence-Rockland, Carleton Place and Cornwall. There are elections for Trustees held periodically. It has 28 elementary schools and the following ten high schools:

| School Name | Community |
| - | - |
| Holy Trinity Catholic Secondary School | Cornwall |
| Notre Dame Catholic High School | Carleton Place |
| St. Francis Xavier Catholic High School | Hammond |
| St. John Catholic High School | Perth |
| St. Joseph's Catholic Secondary School | Cornwall |
| St. Luke Catholic High School | Smiths Falls |
| St. Mary Catholic High School | Brockville |
| St. Matthew Catholic Learning Centre | Cornwall |
| St. Michael Catholic High School | Kemptville |
| St. Thomas Aquinas Catholic High School | Russell |
