Canadian Registration Board of Occupational Hygienists
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WRITTEN EXAMS (2015-2024) Average
ROHT – 67%
ROH Fast Track 1 – 65%
ROH Fast Track 2 – 84%
ROH (Full Exam) – 46%
ROH ORAL EXAMS Average
2023 – 77%
2024 – 83%
2025 – 100%