The Difference Between CEM and GL 11 Plus: What Every Parent Should Know

If your child is preparing for a grammar school entrance exam, you have probably come across both CEM and GL Assessment and wondered what the difference between CEM and GL 11 plus papers actually means for preparation. The answer matters, because the two formats test children in meaningfully different ways — and the approach that serves one does not automatically serve the other.

A Brief History: CEM, GL, and the Current Landscape

For many years, two providers dominated the 11+ market in England. GL Assessment (formerly Granada Learning) produced the more traditional papers, while CEM — the Centre for Evaluation and Monitoring at Durham University — developed an alternative format intended to be less coachable. In 2023, GL Assessment acquired CEM, bringing both under the same corporate ownership. However, the legacy CEM format still operates in several areas, and the distinction between the two testing philosophies very much persists in how papers are set and how children experience them on the day.

Understanding which format your child will face — and what each demands — is the starting point for any well-structured preparation programme.

GL Assessment: Topic-Driven and Predictable in Structure

GL papers follow a recognisable structure. Questions are grouped by topic — number, data handling, shape and space, algebra — and children work through each section with a clear sense of where they are. The question types are consistent year on year, which means a child who has worked methodically through the topic areas knows broadly what to expect on the day.

This makes GL preparation a matter of genuine topic mastery. A child who deeply understands fractions, ratio, and proportion — rather than one who has memorised procedures — will answer GL questions with confidence. The bar model and Concrete–Pictorial–Abstract approach that sits at the heart of Singapore Maths is particularly well-suited here: children who can visualise the structure of a problem are rarely caught out by surface-level changes to wording or numbers.

GL papers are used across Kent, Essex, Lincolnshire, and a number of other regions. The GL 11 plus maths format rewards children who have built systematic topic coverage and are comfortable with exam conditions and time management.

CEM: Mental Agility and Breadth Under Time Pressure

The CEM format was deliberately designed to test a child’s ability to think flexibly rather than to reproduce rehearsed methods. Questions are typically interleaved — different topic types appearing within the same section, sometimes without clear signposting. The pace is unforgiving: children are expected to read, process, and answer at speed, often within a few seconds per question.

CEM places particular weight on comprehension and non-verbal reasoning alongside maths. The numerical reasoning questions frequently embed maths inside worded scenarios, requiring children to extract the relevant information before they can even begin calculating. This is where breadth of reading and genuine mathematical confidence — not just procedural speed — make a significant difference.

Historically, CEM papers have been used in Buckinghamshire, Berkshire, and parts of the Wirral, as well as some independent school consortia. The format does not reward last-minute cramming. It rewards children who have spent time developing mathematical fluency, reasoning agility, and strong reading comprehension across the whole of their preparation period.

How Preparation Should Differ

The difference between CEM and GL 11 plus preparation is not simply a matter of which past papers you use. It is a question of emphasis.

For GL preparation, the priority is systematic topic coverage, depth of understanding, and exam familiarity. A child should know every topic area on the syllabus, be able to work through multi-step problems confidently, and have practised enough under exam conditions to manage their time effectively. The final phase of preparation — typically the spring and summer before the autumn exam — benefits from timed past-paper practice to build pace and exam-technique alongside the subject knowledge already in place.

For CEM preparation, the emphasis shifts toward mental agility, reading stamina, and the ability to switch thinking quickly between topic types. Bar modelling and visual problem-solving are particularly valuable because they allow children to represent unfamiliar question structures pictorially before committing to a calculation — a genuine advantage when faced with questions that have been designed to disorient. Breadth of reading and regular, varied practice across different problem types builds the flexibility that CEM rewards.

In both cases, the foundation is the same: genuine understanding rather than rote memorisation, and fluency with the core problem-solving tools. You can read more about the kinds of skills that underpin strong performance in our guide to 11 plus maths exam preparation.

Neither Format Is Harder — They Are Simply Different

Parents sometimes ask whether CEM or GL is the more difficult paper. This question does not have a clean answer. A child who is an instinctive problem-solver with strong reading comprehension may find CEM more comfortable than a child who has drilled GL topics extensively. Conversely, a methodical child with deep topic knowledge who manages time carefully will often find the GL format plays entirely to their strengths.

What both formats have in common is that they reward the child who has genuinely mastered the underlying mathematics — not the one who has learned tricks. This is why the grammar school entrance exam maths preparation that produces the strongest results is grounded in real understanding rather than surface familiarity with question types.

How Singapore Maths Academy Prepares Children for Both

At Singapore Maths Academy, our approach to 11 plus preparation is built on the Concrete–Pictorial–Abstract method that has placed Singapore consistently at the top of international maths assessments. The bar model is central to our primary and 11+ teaching — it gives children a visual tool for representing any problem structure, which is precisely the skill needed when a CEM question obscures the maths inside a dense passage of text, or when a GL question involves multi-step ratio and proportion work.

Our tutors — all qualified teachers trained in the UK or Singapore — work with small groups of around four to five children. Each child has their own whiteboard in our online classroom, and every stroke is visible to the teacher in real time. This level of oversight means misconceptions are caught and corrected as they arise, not discovered weeks later in a mock exam.

Weekly homework is set, completed, and marked within the online classroom. Errors are worked through at the start of the next lesson. In the final phase of preparation, we move into exam-style practice — timed papers, question-type recognition, and the particular pace-management skills that each format demands.

Our founder was trained personally in Singapore by Dr Yeap Ban Har, the world’s leading Singapore Maths expert, and subsequently became a consultant and international trainer for Maths — No Problem, the organisation that introduced Singapore Maths to the UK curriculum. That depth of pedagogical grounding is what distinguishes our preparation from a centre that runs through past papers and calls it coaching.

If you would like to understand more about the bar model approach and how it builds the problem-solving fluency that both GL and CEM demand, our sister organisation Bar Model Company publishes teacher training resources and guides to the method. You can also watch our approach in practice on the Singapore Maths Academy YouTube channel.

Finding Out Which Format Your Child Will Sit

If you are not certain whether your local grammar school uses CEM or GL papers, the school’s admissions page is the most reliable source. Most schools publish their testing provider alongside the registration timeline. Some independent schools use their own bespoke papers, which draw on elements of both formats, making the underlying skills — fluency, reasoning, and problem-solving under time pressure — all the more important.

Once you know which format applies, a structured preparation programme that builds the right foundations from Year 4 and moves through topic mastery into exam-specific practice gives children the clearest route to performing at their best on the day.

Ready to Start?

If your child is in Year 4 or Year 5 and preparing for a grammar school entrance exam — whether CEM or GL format — we would be glad to hear from you. Get in touch with us and we will talk through the right starting point for your child’s preparation.