Grade Boundaries

What are grade boundaries, and how do you use them?

Whether you’re anxiously anticipating your A level results or gearing up to collect your GCSE grades, it helps to understand what grade boundaries are and how they work to shape your final marks.

Here, we’ve rounded up all about how grade boundaries are set, when they come out, and how they can help you better understand how you did on your exams.

What are grade boundaries?

Grade boundaries determine the minimum marks you need to achieve for a certain grade on your exam. For instance, if the maximum number of points on an assessment is 300, the boundary for a grade A might be 188 - in this scenario, you’ll get an A if you score 188 or over, but remain at a B with 187.

Grade boundaries update every year, and often vary between subjects. This is done to make sure exam difficulty is reflected in the final grading, as is the overall performance of students across the country. That way, marks are kept as consistent and fair as possible.

How do grade boundaries work?

Once exam markers have reviewed all papers, awarding bodies use data insights and their professional expertise to determine the grade boundaries. The aim is to ensure each cohort’s performance is an accurate reflection of their skills. 

One of the key considerations is the exam difficulty. How hard a paper is can vary year to year in any subject. This is something that awarding bodies take into account when setting grade boundaries to ensure students are not disadvantaged by particularly challenging assessments. Senior examiners will review a wide sample of exams to gauge difficulty, so the same ability is awarded the same marks across cohorts. 

Maintaining performance standards across multiple years goes both ways, meaning if the latest round of exams is easier, that will be reflected in the grade boundaries too. In short, the data-led approach helps examining bodies set a standard that accurately reflects the full range of academic achievement.

How are GCSE grade boundaries set?

GCSEs use a numerical grading system ranging from 9 to 1. The boundaries set after all scripts are marked will vary between subjects, but also between tiers, depending on whether the assessment is for foundation level or higher. While you won’t be able to view the official grade boundaries for your cohort until your results day, you can get an idea of what they were previously from our grade boundaries guide.

What are the A-level grade boundaries?

While A level grade boundaries are set following the same approach, there are a few key differences. A levels are graded from A* to E, instead of having numerical values; this means there are fewer grade categories, and therefore bigger jumps between boundaries.

A level grade boundaries also tend to be higher than those of GCSEs. This can be attributed to various factors, including the more advanced academic nature of A levels, as well as the smaller, more specialised cohorts. In addition to there being fewer students taking each A level subject exam, these pupils tend to be higher-performing academically.

The step up in content difficulty also translates to more precise marking, with fewer general questions and an expectation for more detailed, long-form responses ticking multiple boxes.

When do grade boundaries come out?

Grade boundaries are typically released on the corresponding results day for both A levels and GCSEs. This way, schools and students alike can have prompt insight into how raw scores have been translated into final marks. This enables them to better interpret the outcomes and determine whether they need to take any follow-up actions, such as results appeals.

For more information on exam results and next steps, read our guide: What to expect on Results Day?

Understanding your results using grade boundaries

Once you’ve accessed both your results and the respective grade boundaries information, you can dig deeper into your marks if you aren’t one hundred per cent happy.

For instance, if you’re close to the next grade up, it might be worth requesting a review or appealing your result. Just remember that while this can improve a grade, having an exam reviewed a second time could result in a lower mark than the original.

On a confidence level, seeing the grade boundaries will also give you a better idea of how tough the exam season was for your cohort. This way, you can be less disappointed if you didn’t perform as well as expected (or be extra proud of yourself if you did get top marks) if the assessments were more challenging than the previous year.

If you’re decoding your GCSE or A level results and want to understand how grade boundaries work for your cohort, you can find the latest information on our dedicated grade boundaries page.