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IGCSE Grading System Explained: 9-1 vs. A*-G (Quick Guide)
Your child's report card shows a "7" in Maths and a "B" in English. Which grade is better? You are not alone in asking.
Across Dubai, Abu Dhabi, and Sharjah, thousands of families encounter two different IGCSE grading scales running side by side. The confusion is real. One subject uses letters, another uses numbers, and both claim to measure the same thing.
This guide breaks down both scales, shows how they compare, and explains what each grade means in a UAE school context. By the end, you will know exactly where your child stands and what to do next.
What Is the IGCSE Grading System?
IGCSE stands for International General Certificate of Secondary Education. It reports student achievement using letter or number grades, not percentages. Two exam boards run the qualification globally: Cambridge and Edexcel.
Cambridge IGCSE uses A*-G as its primary scale. Pearson Edexcel International GCSE uses the 9-1 scale exclusively, a switch it completed in 2019.
According to Cambridge Assessment International Education, the majority of their schools worldwide chose to retain A*-G grading. Both qualifications carry equal recognition from UK, UAE, and international universities.
The practical difference for your family comes down to which board your child's school uses. Some Dubai schools run Cambridge. Others run Edexcel. A few offer both. If you are exploring IGCSE tutoring options, knowing the board helps match support to the right syllabus.
How Does A*-G Grading Work?
A* is the highest grade. G is the lowest passing grade. U (Ungraded) means the student did not meet the minimum standard. Grades A*-C are widely considered strong passes that qualify for A-Level entry.
The scale includes eight passing grades. A* sits at the top, representing roughly 90% and above. G falls at the bottom, around 20-29%. These percentage ranges are approximate guides, not fixed thresholds.
Actual grade boundaries change with every exam session. Cambridge sets them after marking is complete, not before.
One detail that catches many parents off guard is the tier system. Core papers cap the maximum grade at C. Extended papers unlock the full A*-E range. If your child is capable of a B or higher, they must sit the Extended tier.
Cambridge publishes percentage uniform marks (PUM) on each student's statement of results. These show where a student sits within their grade band, which is useful for spotting whether they landed near the top or bottom of a grade.
What Does 9-1 Mean in IGCSE?
The 9-1 scale is a numerical grading system where 9 is the highest grade and 1 is the lowest. U still means ungraded. The UK government introduced this scale in 2017 to provide clearer separation at the top of the grade range.
Grade 4 equals the standard pass, aligning with the old grade C. Grade 5 counts as a strong pass. The top three grades (9, 8, and 7) spread across what used to be a narrower A*/A band.
Cambridge offers 9-1 as an optional alternative in select regions. Edexcel uses it across all International GCSE subjects.
In UAE schools, the exam board determines which scale appears on results day. Check with your child's school to confirm whether they follow Cambridge or Edexcel.
The table below shows how the two scales align. These are approximate equivalences published by the exam boards.
| 9-1 Grade | A*-G Equivalent | What It Means |
|---|---|---|
| 9 | Above A* | Top performers, narrower band than A* |
| 8-7 | A*-A | High achievers, strong A-Level candidates |
| 6 | B | Above average, meets most entry requirements |
| 5 | High C | Strong pass |
| 4 | C | Standard pass, minimum for many pathways |
| 3-1 | D-G | Below standard pass thresholds |
These conversions are not exact one-to-one matches. They represent the closest alignment based on official anchor points from both exam boards.
Is A* Higher Than 9 in IGCSE?
No. Grade 9 represents a higher standard of performance than the old A*. The 9-1 scale was specifically designed so that grade 9 identifies a smaller, more selective group of top performers.
According to Pearson Edexcel's grading factsheet, the 9-1 redesign aimed to distinguish the very best from the best. Grade 8 aligns broadly with the boundary between A* and high A. Grade 9 sits above that entirely.
Cambridge's official anchor points confirm this alignment. The bottom of grade 7 matches the bottom of the old A. The bottom of grade 4 matches the bottom of the old C. Grade 9 was never intended as a renamed A*.
Both A* and 9 are top grades on their respective scales. The key difference is that 9 covers a narrower band of students. Fewer students receive a 9 than received an A* under the old system.
How Do Cambridge Grade Boundaries Work?
Grade boundaries are the minimum raw marks needed for each grade in a specific subject, paper, and exam session. Cambridge sets them after each exam series, not before. They change every session.
After papers are marked, examiners analyse performance data across all candidates. Thresholds are then adjusted to maintain fair, consistent standards from year to year. This process protects students from being penalised by an unusually difficult paper.
Cambridge publishes boundaries as downloadable PDFs on their website after each May/June and October/November series. Past boundaries are helpful as target ranges during revision.
However, students should never treat a single year's thresholds as a guaranteed benchmark. A harder paper means lower boundaries. An easier paper pushes them up.
Why Do Boundaries Change Every Year?
Boundaries compensate for variation in paper difficulty across years. If the exam is tougher than usual, fewer raw marks are needed for each grade. If the paper is more straightforward, boundaries rise.
This adjustment process ensures that a grade B in 2025 represents the same level of achievement as a grade B in 2026. The system protects your child from being unfairly penalised by one tough exam sitting.
How Does Core vs. Extended Affect Grades?
Core papers cap the maximum achievable grade at C (roughly grade 4 on the 9-1 scale). Extended papers open access to the full range up to A* (or grade 9). The tier your child sits directly limits their highest possible grade.
Here is how the two tiers compare at a glance:
- Core: targets grades C-G; suitable for students aiming for a solid pass
- Extended: targets grades A*-E; required for students aiming above a C
- Tier decision: schools often decide the tier earlier than parents expect
- Subject variation: not every IGCSE subject offers tiered papers
If your child is aiming for A-Levels in Maths or Sciences, they will almost certainly need to sit Extended papers. Most UAE schools targeting A-Level progression default to Extended in these subjects.
The tier decision is worth confirming with your child's teacher at the start of Year 10. Switching tiers later becomes difficult. Students preparing for Extended-tier exams in IGCSE Maths or IGCSE Physics benefit from early, targeted preparation.
What IGCSE Grades Do UAE Students Need for A-Levels?
Most competitive British-curriculum schools in Dubai and Abu Dhabi require at least a B (or grade 6) to continue a subject at A-Level. Many require an A or A* (grade 7-9) for Sciences, Maths, and Further Maths.
These thresholds are set by individual schools, not by Cambridge or Edexcel. Always confirm the specific requirements with your child's school directly.
Here are common entry grade expectations across UAE schools:
- A-Level Maths: typically requires IGCSE Maths at grade A or A*
- A-Level Physics: usually requires IGCSE Physics at grade A
- A-Level Further Maths: often requires IGCSE Maths at A*
- A-Level English Literature: commonly requires IGCSE English at B or above
Strong IGCSE results are the entry ticket to A-Levels, which in turn determine UCAS points for UK university offers. The pathway is sequential. Each step builds on the last.
If your child's predicted grades are below their school's threshold, targeted tutoring can close the gap before exams. Explore IGCSE Chemistry or IGCSE Biology support matched to their exam board and target grade.
Next Steps: Make IGCSE Grades Work for Your Child
Both grading scales are valid and internationally recognised. What matters most is understanding what your child's specific grades mean for their next step. Whether that is A-Level entry at their UAE school or university applications later, clarity now prevents surprises later.
Grade boundaries shift each year. Tier choices limit outcomes. Each school sets its own entry thresholds. The earlier you plan, the more options your child keeps open.
If predicted grades are not where they need to be, one-to-one IGCSE tutoring matched to your child's exam board, tier, and target grade can close the gap before exam season. Get in touch to book a free trial session.
Frequently asked questions
A grade C on the A*-G scale (or grade 4 on the 9-1 scale) is widely treated as the standard pass. Schools, sixth forms, and universities typically use this as the minimum benchmark. Grades D-G are technically graded results but rarely meet entry requirements for further study.
Yes. UK, UAE, US, and international universities recognise both A*-G and 9-1 IGCSE grades. IGCSE results form part of the academic profile, but they are not standalone entry qualifications. A-Level or IB results serve as the primary criteria for university admission.
Yes. UK, UAE, US, and international universities recognise both A*-G and 9-1 IGCSE grades. IGCSE results form part of the academic profile, but they are not standalone entry qualifications. A-Level or IB results serve as the primary criteria for university admission.
Yes. Students can resit individual IGCSE subjects in a later exam session. Resits are typically available in the next May/June or October/November series. Schools in the UAE can advise on resit logistics and registration deadlines.
Both boards are globally recognised. The practical difference for UAE families is the grading scale: Cambridge primarily uses A*-G, while Edexcel uses 9-1. Check which board your school uses so you know which scale to expect on results day.
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