SSSTS exam guide

How the Site Supervision Safety Training Scheme exam works, taken from CITB's published scheme documents (checked 11 November 2026).

Paper
25 questions
Time
30 minutes
Pass rule
80%, first 4 all right

The course

2 days, 15 hours.

The exam paper

25 questions in 30 minutes: 22 multiple choice and 3 short written questions. The first four are safety critical and must all be answered correctly.

Books and notes

Closed book, except the supervision guide (GE706) may be used in the last ten minutes.

Pass mark

80%, plus all four safety-critical questions correct, plus a pass in the trainer review.

If you do not pass

A re-sit within 30 days is allowed with 70% to 77% (safety critical questions all right) or 80% with one safety critical question wrong, if the trainer review is passed.

Syllabus

Law and management

Health and welfare

General safety

High risk activities

Environment

How long does the certificate last?

CITB's scheme documents do not state the validity period. Most training providers say SSSTS certificates last five years, and that you must take the refresher before yours expires. Check the date on your own card and ask your training provider or CITB.

Source: CITB Appendix C: SSSTS (v01.04, February 2026). Rules can change, so always confirm with your training provider.

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SSSTS exam questions answered

What is the SSSTS pass mark?

80%, plus all four safety-critical questions correct, plus a pass in the trainer review. The paper has 25 questions in 30 minutes, worth 30 marks, with 24 needed to pass.

Can I re-sit the SSSTS exam if I fail?

A re-sit within 30 days is allowed with 70% to 77% (safety critical questions all right) or 80% with one safety critical question wrong, if the trainer review is passed. Always confirm the detail with your training provider.

Can I use books in the SSSTS exam?

Closed book, except the supervision guide (GE706) may be used in the last ten minutes.

How long is the SSSTS course?

2 days, 15 hours.

Where can I practise the SSSTS exam format?

Our free timed SSSTS paper follows the same layout and pass rules, with a score by module. Full access adds the whole question bank and explanations (30 days full access, 30 days).