Do mock exams matter?

Do mock exams count towards your GCSEs or A-Levels?

No. Your final grades come only from the real exams and any coursework or non-exam assessment your board sets. A mock is a practice run that your school organises, marks and grades itself. Leading Tuition, a tutoring company that reviewed how mocks are used, says a mock grade “carries no official status anywhere in the exams system”. Mocks still matter, because your school makes several decisions about you before the summer, and a mock is often its most recent evidence from a paper sat in exam conditions.

How do mocks affect your predicted grades?

Teachers predict your grades for sixth-form applications, reports home and their own planning. They usually weigh a mix of evidence: mocks, class tests, homework and how you have been working. A predicted grade is a judgement, and it can go up as well as down. If a mock went badly, ask your teacher what evidence would change their prediction and when the next assessment is.

Do sixth forms and colleges look at mock results?

Mostly through predicted grades. Many sixth forms and colleges ask you to apply during Year 11, before you have any GCSE results. Simon Langton Girls' Grammar School's sixth form in Kent, for example, says its offers “will be made on the basis of predicted performance at GCSE”. Offers made in Year 11 are conditional on meeting its grade criteria, and they are confirmed once it has seen your GCSE results in August. So a weak mock can lower a prediction at the moment your application is read, while the place itself depends on your real grades. If your sixth form asks for high grades in a subject, tell your teacher which grades you need.

Can a mock decide which tier you sit?

Yes, and this is the decision with the biggest direct effect on your final grade. In tiered subjects such as maths and the sciences, your school enters you for Foundation or Higher tier. Ofqual's student guide says Foundation tier students may be awarded grades 5 to 1, and Higher tier students grades 9 to 4, with a grade 3 possible for students who just miss a 4. In combined science the ranges are 5-5 to 1-1 and 9-9 to 4-4. AQA's GCSE Maths specification gives the same split. So a Foundation entry means the highest grade you can get is a 5. Schools use mock results as evidence when they choose your tier. If you want to sit Higher and your mock was borderline, ask your teacher before entries are made what you would need to show, and by when.

Do mocks decide your set or extra lessons?

Often. Schools use mock results to move students between sets and to decide who joins booster groups, small-group sessions or after-school revision classes. No national rule covers this, so every school does it differently. If you are offered extra support after a mock, it is aimed at the gaps the mock found. Take it, and ask which topics it will cover.

Do A-Level mocks matter for university?

Your UCAS application carries predicted grades, which your school sets. UCAS describes a predicted grade as the grade your school or college believes you're likely to achieve in positive circumstances. It asks schools to base predictions on evidence such as past performance, internal assessments and current work. Mocks are internal assessments, so they can shape the predictions universities see. Timing matters. UCAS says predictions must be finalised by the time your application is submitted, and that students should be told their likely predicted grades in time to research courses. That is why end-of-Year-12 exams can carry more weight for predictions than Year 13 mocks, which may come after your application has gone. Ask your school which assessments it uses. Year 13 mocks still count. Your offer depends on your real grades, and UCAS says the gap between predicted and achieved grades has widened, so treat the Year 13 mock as your last full check.

Do mocks count if exams are cancelled?

Only in that unlikely case. Government guidance asks schools and colleges to make sure students sit mock exams in exam conditions before their formal exams, so there is evidence to use if exams can't go ahead. It says one set of mocks should be sufficient, and encourages schools to hold them in the first half of the academic year where possible. Ofqual's student guide says cancellation is very unlikely and that your teachers should tell you when an assessment could be used as evidence. Its advice to students is that “you should just approach those assessments as you normally would”. The government guidance also says a teacher can't decide a final qualification grade unless Ofqual sets specific guidance on this.

What happens if you fail your mocks?

Nothing official. The result doesn't go on any certificate, and your final grade depends on the real exams. Your teachers may lower a predicted grade, suggest a different tier or offer extra support. Mock grades often come out lower than final grades for reasons that have little to do with ability. You may not have been taught the whole course yet, you have had months less revision, and the grade boundaries used may come from a different year. You will see claims online that most students go up one, two or even three grades after their mocks. We looked for published UK data that follows students from their mock grades to their final grades and didn't find any, so treat those numbers with caution. The useful response to a bad mock is to work through it.

• Ask your teacher for the paper back, the mark scheme, and what the result means for your predicted grade and tier.
• Sort every lost mark into knowledge, technique, timing or misreading.
• Make a topic list from the knowledge gaps, biggest first, and put it into your timetable.
• Redo the questions you lost marks on a week or two later, with your notes shut.

Do Year 10 mocks matter as much as Year 11 mocks?

Year 10 mocks, which are often end-of-year exams, usually matter less. They can set your first predicted grades, decide sets for Year 11 and start the conversation about your tier, and there is time to change all three. Year 11 mocks matter more because of timing. They are usually the most recent exam-style evidence your teachers have when they write sixth-form predictions and make tier entries. If your Year 10 results were poor, your Year 11 mocks are the chance to replace them with better evidence. At A-Level it can run the other way: end-of-Year-12 exams may count for more than Year 13 mocks.

Sources

Leading Tuition: what GCSE mock grades are actually used for (September 2026): A tutoring company's review of the school decisions a mock grade feeds, such as tier entry, predicted grades, sixth-form offers and intervention groups. Simon Langton Girls' Grammar School sixth form: admissions: An example of a sixth form that makes Year 11 offers on predicted GCSE grades and confirms them with real results in August. Ofqual: what you need to know before your exams (student guide, 2026): The grades available on Foundation and Higher tier, and what happens if exams can't go ahead nationally. AQA GCSE Mathematics 8300: specification at a glance: States that GCSE Maths has a Foundation tier (grades 1 to 5) and a Higher tier (grades 4 to 9). UCAS: predicted grades, what you need to know: UCAS's definition of a predicted grade, the evidence schools should base it on, and when it must be finalised. GOV.UK: guidance on collecting evidence of student performance to ensure resilience in the qualifications system: Asks schools and colleges to make sure students sit mocks in exam conditions, so there is evidence if exams can't go ahead (updated 4 March 2025).