Ontario Rank	Board Rank	School	City	Type	Overall Score	2023‑24	2022‑23	2021‑22	3‑Year Change	Website
219	1	Glengarry District High School	Alexandria	Public	7.5	7.5	4.9	7.2	+0.3 ↑	Visit
256	2	Almonte District High School	Almonte	Public	7.3	7.3	6.5	6.2	+1.1 ↑	Visit
260	3	Brockville Collegiate Institute	Brockville	Public	7.3	7.3	7.2	7.6	-0.3 ↓	Visit
264	4	North Dundas District High School	Chesterville	Public	7.3	7.3	6.1	6.3	+1.0 ↑	Visit
347	5	Charlottenburgh and Lancaster District High School	Williamstown	Public	6.9	6.9	6.8	5.8	+1.1 ↑	Visit
361	6	T R Leger School of Adult & Continuing Secondary School	Cornwall	Public	6.9	—	6.9	4.3	+2.6 ↑	Visit
376	7	Rockland District High School	Rockland	Public	6.8	6.8	6.7	4.7	+2.1 ↑	Visit
390	8	Gananoque Secondary School	Gananoque	Public	6.7	6.7	6.1	6.0	+0.7 ↑	Visit
456	9	North Grenville District High School	Kemptville	Public	6.4	6.4	6.8	6.6	-0.2 ↓	Visit
500	10	Carleton Place High School	Carleton Place	Public	6.2	6.2	5.9	6.5	-0.3 ↓	Visit
513	11	Russell High School	Russell	Public	6.2	6.2	5.4	5.8	+0.4 ↑	Visit
517	12	Thousand Islands Secondary School	Brockville	Public	6.2	6.2	5.8	5.4	+0.8 ↑	Visit
571	13	Vankleek Hill Collegiate Institute	Vankleek Hill	Public	5.9	5.9	6.2	5.8	+0.1 ↑	Visit
592	14	Rideau District High School	Elgin	Public	5.8	5.8	6.2	6.7	-0.9 ↓	Visit
603	15	Perth and District Collegiate Institute	Perth	Public	5.7	5.7	5.6	6.4	-0.7 ↓	Visit
687	16	Tagwi Secondary School	Avonmore	Public	5.0	5.0	4.5	5.2	-0.2 ↓	Visit
690	17	Athens District High School	Athens	Public	4.9	4.9	5.2	4.9	0.0 →	Visit
700	18	Smiths Falls District Collegiate Institute	Smiths Falls	Public	4.9	4.9	4.7	5.0	-0.1 ↓	Visit
708	19	South Grenville District High School	Prescott	Public	4.8	4.8	4.9	5.1	-0.3 ↓	Visit
712	20	Seaway District High School	Iroquois	Public	4.7	4.7	4.8	4.3	+0.4 ↑	Visit
738	21	Cornwall Collegiate and Vocational School	Cornwall	Public	4.1	4.1	4.0	4.5	-0.4 ↓	Visit
751	22	St Lawrence Secondary School	Cornwall	Public	3.7	3.7	3.9	3.4	+0.3 ↑	Visit