I got this article form wikipedia... I this helps.

Most students enter in Grade 7 through a two-stage competitive examination. Prior to the admission of the class of 2013, the first stage consisted of a multiple choice exam, with approximately 300 participating;[2] those who pass this test in the top percentiles (usually 200 students) are invited back for a second written exam and an interview. However, starting with the class of 2014, admission to UTS consists of a Secondary School Admission Test (SSAT) and an interview with a staff member and UTS alumni. Ultimately, 110 candidates are chosen from more than 300 applicants each year.[3] On average, for the first year (F1) there are five classes each of which consists of 22 students. For admission in subsequent grade levels, applicants are admitted through a less formal process, albeit one just as rigorous. Candidates must be Canadian citizens or landed immigrants and may apply to enter either Grade 7 or the upper school (Grade 9 and above).

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I believe it's 1 in every 6 applicants who are successful.

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1 in 5

the SSAT score must be 95 percentile or hihger

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NO THE SSAT PERCENTILE DOESN'T HAVE TO BE 95+

there are people in the school with lower.

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