| A. B. Lucas S.S. |
332 |
| A.Y. Jackson S.S. |
398 |
| Agincourt C.I. |
307 |
| Albert Campbell C.I. |
243 |
| Appleby College |
17 |
| ASDAN |
129 |
| Bayview Glen Independent School |
19 |
| Bayview S.S. |
368 |
| Bell H.S. |
205 |
| Bill Hogarth S.S. |
3 |
| Bloor C.I. |
85 |
| Brooklin H.S. |
65 |
| Bur Oak S.S. |
124 |
| Cairine Wilson S.S. |
10 |
| Cameron Heights C.I. |
32 |
| Canadian Computing Olympiad |
12 |
| Castlebrooke S.S. |
39 |
| CCCGSH Informatics |
22 |
| Centennial CVI |
56 |
| Centre Wellington District H.S. |
4 |
| Chaminade College School |
7 |
| Chinguacousy S.S. |
33 |
| Christ Church Grammar School |
57 |
| Closed |
0 |
| Cloud Times Education |
12 |
| Codeforces |
322 |
| CodingMarch |
128 |
| Colonel By S.S. |
78 |
| Corpus Christi College |
14 |
| Crescent School |
267 |
| CS145 |
59 |
| Danforth CTI |
122 |
| Deluxe |
7 |
| digIT Summer School |
33 |
| Don Mills C.I. |
427 |
| Don Mills Programming Gala 2016 |
260 |
| Don Mills Programming Gala 2017 |
419 |
| Don Mills Programming Gala 2018 |
422 |
| Don Mills Programming Gala 2019 |
147 |
| Don Mills Programming Gala 2019 - Ottawa Mirror |
36 |
| Dr. Norman Bethune C.I. |
132 |
| Dryden H.S. |
10 |
| E.L. Crossley S.S. |
10 |
| Earl Haig S.S. |
111 |
| Earl of March S.S. |
41 |
| Eindhoven University of Technology |
2 |
| Erindale S.S. |
66 |
| Etobicoke Collegiate Institute |
10 |
| Father Michael Goetz C.H.S |
1 |
| Fleetwood Park S. S. |
32 |
| Forest Hill C.I. |
38 |
| Foxen |
68 |
| General Amherst H.S. |
962 |
| Georgia Institute of Technology |
48 |
| Glenforest S.S. |
251 |
| Guangzhou Foreign Language School |
27 |
| Harbord C.I. |
34 |
| Harvard University |
108 |
| ICHB |
60 |
| IEEE @ Humber College Student Branch |
40 |
| Indian Institute of Technology, Delhi |
38 |
| Indian Institute of Technology, Kanpur |
7 |
| Iroquois Ridge H. S. |
33 |
| John F. Ross C.V.I. |
16 |
| John Fraser S.S. |
52 |
| Langstaff Secondary School |
11 |
| Lawrence Park C.I. |
1 |
| Leaside H.S. |
60 |
| Lisgar C.I. |
33 |
| London Central S.S. |
318 |
| Loyola C.S.S. |
27 |
| Mahou Shoujou |
34 |
| Malvern C.I. |
19 |
| Marc Garneau C.I. |
148 |
| Markville S.S. |
21 |
| Massachusetts Institute of Technology |
43 |
| McGill University |
3 |
| Middlefield C.I. |
20 |
| Milliken Mills H.S. |
68 |
| Mississauga S.S. |
38 |
| Moira Secondary School |
12 |
| Moroccan Olympiad in Informatics |
625 |
| Neil McNeil H.S. |
20 |
| Nepean H.S. |
172 |
| Newmarket H.S. |
33 |
| Northern S.S. |
213 |
| Notre Dame C.S.S. |
3 |
| Olympiads Computing Competition |
7 |
| Olympiads School |
753 |
| Ottawa STEM Club |
26 |
| Parkdale C.I. |
5 |
| PEO-Mississauga Chapter |
0 |
| Pierre Elliott Trudeau H.S. |
155 |
| Port Moody Secondary School |
7 |
| Presbyterian Ladies College, Sydney |
6 |
| Qing Teng Academy of Alcanta International College |
7 |
| R.H. King Academy |
19 |
| Reynolds S.S. |
47 |
| Richmond Green S.S. |
99 |
| Richmond Hill H.S. |
257 |
| Runnymede C.I. |
88 |
| SATEC @ W. A. Porter Collegiate Institute |
110 |
| Sir Allan Macnab S.S. |
6 |
| Sir John A. Macdonald C.I. |
42 |
| Sir Oliver Mowat C.I. |
55 |
| Sir Winston Churchill High School |
15 |
| SKH Tsoi Kung Po S.S. |
5 |
| South City International School |
1 |
| St Hilda’s Anglican School for Girls |
47 |
| St. Andrew's College |
165 |
| St. Augustine C.H.S. |
12 |
| St. Basil-the-Great C. S. |
8 |
| St. Clement's School |
38 |
| St. Edmund Campion C.S.S. |
39 |
| St. Francis Xavier S.S. |
115 |
| St. Marcellinus C.S.S. |
38 |
| St. Mildred's-Lightbourn School |
8 |
| St. Robert C.H.S. |
184 |
| St. Thomas Aquinas Brampton |
86 |
| St. Thomas Aquinas C.S.S. |
72 |
| Stanford University |
3 |
| Stephen Lewis S.S. |
30 |
| Test organization |
0 |
| Thames Valley District School Board |
32 |
| The Woodlands School |
72 |
| Thornhill S.S. |
147 |
| Thornlea S.S. |
68 |
| Tunisian Olympiad in Programming |
516 |
| UC Berkeley |
38 |
| Unionville H.S. |
26 |
| University of British Columbia |
18 |
| University of Guelph |
33 |
| University of Ljubljana |
2 |
| University of Ontario Institute of Technology |
16 |
| University of Pinar del Río |
4 |
| University of Toronto |
181 |
| University of Toronto Schools |
249 |
| University of Waterloo |
398 |
| Upper Canada College |
6 |
| Ursula Franklin Academy |
110 |
| Victoria Park C.I. |
413 |
| Vincent Massey S.S. |
236 |
| Waterloo C.I. |
14 |
| WCIPEG Migration |
92 |
| Westdale S.S. |
25 |
| Western Canada High School |
19 |
| Westmount C.I. |
16 |
| Westview Centennial S.S. |
2 |
| White Oaks S.S. |
94 |
| William Lyon Mackenzie C.I. |
270 |
| Woburn C.I. |
42 |
| York Memorial C.I. |
170 |
| York Mills C.I. |
338 |