| School | Address | City | Province | Postal Code |
| G.P. Vanier Secondary School | P.O. Box 3369 | Courtenay | BC | V9N 5N5 |
| Gananoque Secondary School | Box 640 | Gananoque | ON | K7G 2V2 |
| Gander Collegiate | 3 Gander Bay Road | Gander | NF | A1V 1W1 |
| Garden Valley Collegiate | Box 3000 | Winkler | MB | R6W 4C8 |
| Garibaldi Secondary School | 12051 248 Street | Maple Ridge | BC | V2X 6Y4 |
| George Harvey Collegiate Institute | 1700 Keele Street | Toronto | ON | M6M 3W5 |
| George S. Henry Academy | 200 Graydon Hall Drive | Toronto | ON | M3A 3A6 |
| Georges Vanier Secondary School | 3000 Don Mills East | North York | ON | M2J 3B6 |
| German Language School of Calgary | 201 3112 11th St. NE | Calgary | AB | T2E 7J1 |
| Gladstone Secondary School | 4105 Gladstone Street | Vancouver | BC | V5N 4Z2 |
| Gleneagle Secondary School | 1195 Lansdowne Drive | Coquitlam | BC | V3B 7Y8 |
| Glenforest Secondary School | 3575 Fieldgate Drive | Mississauga | ON | L4X 2J6 |
| Gloucester High School | 2060 Ogilvie Road | Gloucester | ON | K1J 7N8 |
| Glovertown Academy | Box 100 Penny's Brook Road | Glovertown | NF | A0G 2L0 |
| Golden Hills Virtual School | 435A Highway #1 | Strathmore | AB | T1P 1J6 |
| Golden Secondary School | P.O. Box 1350 | Golden | BC | V0A 1H0 |
| Gonzaga Regional High School | Smithville Crescent | St. John's | NF | A1B 2V2 |
| Gordon Bell High School | 3 Borrowman Place | Winnipeg | MB | R3G 1M6 |
| Grant Park High School | 450 Nathaniel Street | Winnipeg | MB | R3M 3E3 |
| Gray Academy of Jewish Education | A100 - 123 Doncaster Street | Winnipeg | MB | R3P 1B6 |
| Greenall School | General Delivery | Balgonie | SK | S0G 0E0 |
| Greenwood College School | 443 Mount Pleasant Road | Toronto | ON | M4S 2L8 |
| Grey Highlands Secondary School | Box 460 | Flesherton | ON | N0C 1E0 |
| Grimsby Secondary School | 5 Boulton Avenue | Grimsby | ON | L3M 1H6 |
| Guildford Park Secondary School | 10707 146th Street | Surrey | BC | V3R 1T5 |
| Gulf Islands Secondary School | 112 Rainbow Road | Salt Spring Island | BC | V8K 2K3 |