Ontario Rank	Board Rank	School	Board	City	Type	Overall Score	2023‑24	2022‑23	2021‑22	3‑Year Change	Website
6	1	St Robert Catholic High School	York CDSB	Thornhill	Catholic	9.5	9.5	9.4	9.1	+0.4 ↑	Visit
35	6	Thornlea Secondary School	York Region DSB	Thornhill	Public	8.8	8.8	8.8	8.1	+0.7 ↑	Visit
65	11	Thornhill Secondary School	York Region DSB	Thornhill	Public	8.5	8.5	8.1	7.9	+0.6 ↑	Visit
93	18	Stephen Lewis Secondary School	York Region DSB	Thornhill	Public	8.2	8.2	8.3	7.9	+0.3 ↑	Visit
95	19	Hodan Nalayeh Secondary School	York Region DSB	Thornhill	Public	8.2	8.2	8.5	7.8	+0.4 ↑	Visit
143	21	Westmount Collegiate Institute	York Region DSB	Thornhill	Public	7.9	7.9	8.1	7.9	0.0 →	Visit
206	9	St Elizabeth Catholic High School	York CDSB	Thornhill	Catholic	7.5	7.5	7.7	6.4	+1.1 ↑	Visit