Illustrative study tool

ACSA NCSO Module Difficulty Index

Illustration and browser-local entries by NCSO Prep, Alberta · Last reviewed 15 August 2026 · Sources

Explore an illustrative study-topic chart and record your own experience in this browser. The example values are not collected candidate results.

Rate your experience

Which module was hardest for you? Select a module Health and Safety Program Development Principles of Health and Safety Management Auditing COR Audit Legislation Hazard Identification and Control Incident Investigation OHS Statistics and Risk Management Health and Safety Culture Professional Practice What was your mock exam score?

68%

What industry do you work in? Select an industry Pipeline/Oilfield Commercial Construction Industrial Residential Other Where are you located? Select a location Calgary Edmonton Fort McMurray Grande Prairie Red Deer Lethbridge Other Alberta Outside Alberta How long did you study? Select study time Under 1 week 1-2 weeks 2-4 weeks 1+ months Submit my rating →

How to use this index

If you are still studying, use your own results to select topics to review. The free 10-question diagnostic gives you an initial sample with instant explanations. Premium includes longer timed practice mocks.

You can record your own study experience here for reference in this browser. Other candidates cannot see these local entries.

Questions people ask

Which NCSO module is the hardest?

Difficulty depends on your knowledge and experience. This page’s example chart is not evidence that one topic is harder than another. Use your own practice results and ACSA’s official topic outline to choose what to review.

How many modules are on the NCSO exam?

ACSA publishes the official exam topic outline in its NCSO/NHSA Exam Overview. The ten labels used in this illustrative chart are page-specific study topics, not an official exam blueprint. NCSO Prep’s practice bank separately uses its own ten study modules.

Is the NCSO exam harder than the CSO exam?

There is no separate CSO exam because CSO is a job title, not a designation. The NCSO exam has 120 multiple-choice questions in a two-hour, closed-book sitting, with a 75% pass mark. Study needs depend on prior knowledge and available time.

What is a good mock exam score before the real NCSO exam?

ACSA’s official pass mark is 75%, but a practice score does not predict your exam result. Use timed practice to check pacing and find topics to review. The example scores on this page are illustrative and are not candidate averages.

How is the NCSO Module Difficulty Index data collected?

Entries are saved in your browser and combined with illustrative example values for display. They are not uploaded to a shared candidate dataset. The example values are not real submissions or figures from ACSA.

Last updated 15 August 2026.