SSSTS Mock Test Guide: How to Pass the CITB SSSTS Exam First Time

The Site Supervision Safety Training Scheme, better known as the SSSTS, is the standard qualification for construction supervisors across the UK. It sits within the CITB Site Safety Plus suite alongside the SMSTS, and on most major sites you will not be given responsibility for a gang or a work area without it. The course lasts two days, and it finishes with the part that worries candidates most: the exam.

The reassuring truth is that the SSSTS exam is very passable with the right preparation. This guide explains how the assessment works, what the examiners are really testing, and how to use SSSTS mock tests so that you walk into the exam room confident rather than hopeful.

What Is the SSSTS Course?

The SSSTS course is a two day CITB Site Safety Plus programme aimed at anyone who supervises others on site. That includes gangers, chargehands, foremen, working supervisors and tradespeople stepping up into their first supervisory role. There are no formal entry requirements, although genuine site experience makes the scenarios in the course far easier to relate to.

Across the two days you cover the legal responsibilities of a supervisor, risk assessments and method statements, site inductions and toolbox talks, and the practical day to day supervision of health and safety on site. Courses are delivered by approved training providers, in classrooms or through virtual classroom sessions, and the scheme itself is administered by CITB.

How the SSSTS Exam Works

Your result does not rest on the written paper alone. Trainers also assess your engagement throughout the course, including the group exercises and discussions, so treating the two days as something to sit through quietly is a mistake. Contribute, ask questions and take part in the exercises, because they form part of the overall assessment.

The written element is a multiple choice exam taken at the end of the course. It covers everything taught across the two days, and the questions are scenario driven rather than simple recall. You will be asked what a supervisor should do first, which action is most appropriate, or which option best reflects legal duties. Several answers often look plausible, and the exam is testing whether you can identify the best one.

The paper also includes safety critical questions. These deal with situations where the wrong decision could contribute to serious injury or death, and they carry particular weight in the marking. Your training provider will confirm the exact number of questions and the time allowed, but the format is consistent: multiple choice, completed under exam conditions, at the end of day two.

Why SSSTS Mock Tests Make the Difference

Most SSSTS candidates are experienced on site but out of practice with exams. Many have not sat a formal test for years, sometimes decades. A mock test bridges that gap. It reintroduces you to reading questions under time pressure, weighing up similar answers and committing to a decision.

Mock tests also expose the difference between what happens on site and what the CITB expects on paper. Site habits are not always best practice, and the exam is marked against best practice and legal duty, not custom and practice. Working through realistic questions before the course shows you exactly where those gaps sit, while there is still time to close them.

How to Use SSSTS Mock Tests Properly

A mock test used well is a diagnostic tool, not a memory exercise. Here is a simple structure that works:

1. Sit a baseline test before the course. Take one full SSSTS mock test cold, before you open a single revision note. The score does not matter. What matters is the honest picture of where you stand.
2. Review every explanation, not just the wrong answers. Understanding why the right answer is right teaches you the reasoning pattern the real exam rewards.
3. Revise the weak topics, then retest. Target the subjects where you dropped marks rather than rereading everything from the start.
4. Practise under timed conditions. At least one mock should be completed in a single sitting without notes, at the pace you will face on the day.
5. Finish with a confidence run the night before the exam. A final short session settles the nerves and keeps the question style fresh in your mind.

Avoid the trap of repeating the same test until you score full marks. Memorising a fixed set of answers proves nothing. Rotate through different questions so you are learning principles, not sequences.

The Topics That Catch Candidates Out

Certain subjects consistently cost SSSTS candidates marks. Give these extra attention in your revision:

• The Health and Safety at Work etc. Act 1974, and the difference between the duties your employer holds and the duties you carry personally as a supervisor.
• Risk assessments and method statements, including who prepares them, who must follow them and what to do when the work on site no longer matches the paperwork. The Health and Safety Executive publishes clear guidance on risk assessment that is well worth reading before the course.
• Working at height, especially the hierarchy of controls and the rules around ladders and scaffolds.
• Toolbox talks and site inductions, including when they are needed, who delivers them and what a good one contains.
• Occupational health, covering noise, vibration, dust and manual handling, which many candidates underestimate compared with the more visible safety topics.
• Accident reporting, including what must be reported under RIDDOR and the supervisor's role after an incident.
• Enforcement, meaning what inspectors can do, including improvement and prohibition notices.

Common Mistakes in SSSTS Preparation

The most common mistake is assuming site experience alone will carry you through. Experienced supervisors often pick answers based on what actually happens on their sites, and lose marks wherever real practice falls short of best practice. The exam rewards the textbook answer, so learn the textbook answer.

The second mistake is passive revision. Reading course notes over and over feels productive but leaves very little behind. Answering questions, checking explanations and explaining the reasoning back to yourself is slower per page and dramatically more effective per hour.

The third is ignoring the wording of questions. Words like first, best and most appropriate change the correct answer entirely. Mock tests train you to slow down and read the whole question, which is half the battle in any CITB exam.

Keeping Your Certificate Valid: The SSSTS Refresher

An SSSTS certificate is valid for five years. Before it expires you can complete the one day SSSTS Refresher course, which updates your knowledge of legislation and best practice and renews your certificate for a further five years.

The critical detail is timing. If you let the certificate lapse, the refresher route closes and you must sit the full two day course again. Put the expiry date in your calendar the day your certificate arrives, and book the refresher well in advance, because places fill quickly at busy times of year.

Not Sure Whether You Need SSSTS or SMSTS?

The SSSTS is designed for supervisors, while the five day SMSTS is aimed at site managers and those responsible for planning and running sites. If you are weighing up which course fits your role, our comparison of SMSTS vs SSSTS and which CITB course you need walks through the differences in depth, duration, assessment and employer expectations.

On the Day: Exam Technique That Works

Good technique on the day protects the marks your revision has earned:

• Read every question twice before looking at the answers, and pick out the key word: first, best, must or should.
• Answer from the perspective of a supervisor following best practice, not from habit.
• Eliminate the obviously wrong options first, then choose carefully between what remains.
• Do not rush. The time allowed is enough if you work steadily, and the candidates who finish first are rarely the ones who score highest.
• Flag anything you are unsure of and come back to it rather than burning minutes early on.
• Never leave a question blank. An educated guess always beats no answer on a multiple choice paper.

Start Preparing Today

Passing the SSSTS first time comes down to preparation you can start right now. Learn how the exam thinks, close your knowledge gaps with targeted revision, and rehearse under timed conditions using the SSSTS mock tests on this site. Do that, and the exam at the end of day two becomes a formality rather than a hurdle.