Published on: August 25, 2026

When your child's results slip arrives, what does an A*, a 7, or a C actually mean? The IGCSE grading system can feel confusing at first, especially with two different scales in use and separate tiers for some subjects. The guide below walks through how IGCSE grades work, what counts as a pass, and how those results open the next stage of your child's education in Mumbai and abroad.

What Is The IGCSE Grading System

The IGCSE grading system is the scale Cambridge uses to turn exam marks into a final grade for each subject. Cambridge International General Certificate of Secondary Education (IGCSE) exams are graded on one of two scales, and every subject sits on one of them. A grade of U, meaning ungraded, is given when a mark falls below the lowest grade. 

For a fuller primer on the qualification itself, a guide to the Cambridge IGCSE board covers how the programme is structured.

The A Star To G Scale

Most Cambridge IGCSE subjects are graded from A* down to G, giving eight grades in total, A*, A, B, C, D, E, F, and G. A* is the highest, G is the lowest graded result, and anything below G is recorded as U. Cambridge asked schools worldwide which scale they preferred, and the majority chose to keep A*-G, so it remains the most common scale in Mumbai classrooms.

The 9 To 1 Scale

A growing number of Cambridge subjects are also offered on a 9 to 1 scale, where 9 is the highest grade and 1 the lowest, with U again meaning ungraded. Schools in England use this scale for their GCSEs, and Pearson Edexcel IGCSE uses it too, so many parents will have seen number grades before. The two scales measure the same standards, just with different labels.

How A Star To G And 9 To 1 Grades Compare

Parents often want to translate one scale into the other, especially when a school report mixes them. The table below shows the broad equivalence, though it is an approximation rather than an exact one-to-one match, since the 9 to 1 scale spreads top performers across three grades where A*-G has only one.

Core Versus Extended Tiers

Several IGCSE subjects, Mathematics being the most common, split into two tiers called Core and Extended. Core covers foundation content and caps the highest grade a child can earn, while Extended includes all the Core material and adds more demanding work that unlocks the top grades. Choosing the right tier matters, because a child aiming for a D often does better on Core than on Extended.

How A Mark Becomes A Grade

An IGCSE grade is not simply a raw percentage. Marks pass through a careful process so that a grade means the same standard from one year to the next, even when a paper is harder or easier than usual. Three ideas explain how IGCSE scores become the letters and numbers on the results slip.

Grade Thresholds

Senior examiners set a minimum mark, called a grade threshold or grade boundary, for each grade in every session. A tougher paper lowers the threshold, and an easier one raises it, so that a grade A one year reflects the same ability as a grade A the next. Your child's total mark is then compared with these thresholds to decide the final grade.

Weighting And Scaling

Most subjects have several papers, and each one counts for a set share of the final result. Raw marks may also be scaled so that different versions of a paper are treated fairly. The weighted total across all papers is what gets measured against the thresholds.

Percentage Uniform Marks

Many Cambridge subjects also report a Percentage Uniform Mark on the statement of results. That figure does not show the raw percentage scored. Instead it shows where a child sits within a grade band, near the top, middle, or bottom, which is useful when planning the next stage.

What Counts As A Good IGCSE Grade

Cambridge does not set an official pass mark, so no single grade is labelled a fail. In practice, a grade C on the A*-G scale, or a 4 on the 9 to 1 scale, is widely treated as a standard pass and the usual minimum for sixth form and A Level entry. Higher grades simply widen the choices available at the next stage.

• Grade C or 4: the common benchmark for a solid pass and for moving into A Levels or the IB Diploma Programme
• Grade B or 6 and above: often expected for competitive courses and stronger university pathways later
• Grade A or A*, or 7 and above: valued for selective subjects such as engineering, medicine, and economics
• Grade U: no grade awarded, usually meaning a retake or a change of tier is worth discussing

When IGCSE Results Come Out And How Retakes Work

Cambridge runs two main exam series a year, and results follow a predictable calendar. Knowing the dates helps families plan the jump to A Levels, the IB Diploma, or a school move without last-minute stress.

• Results for the May and June series are released in August, and results for the October and November series in January
• Learners can retake IGCSE exams in a later series, with June and November being the main Cambridge sessions
• There is no cap on retake attempts, and the best grade is normally the one that stands on the certificate
• Retakes are common in core subjects such as Mathematics and English when a child narrowly misses a target grade

How IGCSE Grades Fit Indian And Global Pathways

Strong IGCSE scores are recognised well beyond the Cambridge classroom. For families in Mumbai weighing what comes after Grade 10, the grades open several routes at once, both in India and overseas. 

For families still comparing programmes, a look at IGCSE alongside the IB Diploma is a useful next read.

• Sixth form and senior programmes such as A Levels and the IB Diploma Programme usually ask for a set of C grades or better, with higher grades for specialist subjects
• Indian senior secondary options remain open, including the ICSE pathway offered at JBCN Borivali and Mulund
• A closer comparison of Cambridge and the national board helps families weighing that choice
• Universities in the United Kingdom, United States, and beyond read IGCSE grades as part of a wider profile alongside later qualifications
• For any Indian entrance exam or degree, families should confirm eligibility directly with the exam authority or university, since requirements vary

How JBCN Supports Strong IGCSE Results

At JBCN, the Cambridge IGCSE curriculum is taught by faculty with examiner-level expertise in Cambridge assessment, which shapes how Learners are prepared for every paper. As an international school in Mumbai with five campuses, JBCN teaches Cambridge across Borivali, Parel, Oshiwara, Chembur, and Mulund. That teaching pairs Cambridge standards with its own experience-led learning.

• Tier decisions between Core and Extended are made subject by subject, based on each child's attainment and goals rather than a blanket rule
• The secondary school programme builds exam technique alongside conceptual understanding, not rote memorising
• Early university counselling maps target grades to A Level, IB, and university requirements from the start of the pathway
• In the 2024-25 cycle, JBCN Learners earned 8 Outstanding Cambridge Learner Awards, spanning Top in the World and Top in India distinctions, with Parel producing four World Toppers and one India Topper in IGCSE Mathematics

Take The Next Step

Grades tell one part of the story, and the teaching behind them tells the rest. To see how our facilitators prepare Learners for Cambridge exams and the choices that follow, come and spend time on campus.

Speak with our admissions team at the JBCN campus nearest you.

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