GL vs CEM for Grammar Schools: 11+ Guide
Understanding the difference between GL vs CEM for grammar schools can help parents choose the right approach to 11+ preparation. Both assessment providers can test similar core skills, but the format, question types and balance of subjects can vary.
This guide compares GL vs CEM 11+ tests, explaining how the assessments differ, what children may be tested on and how to prepare effectively. For broader preparation advice, see our 11+ Practice Papers: Free Online Papers 2026 and Grammar School Admissions Guide.
Page Contents
GL vs CEM: What Is the Difference?
What Is the GL Assessment?
GL Assessment is one of the main providers of 11+ admissions tests used by grammar schools in England. Its assessments can cover verbal reasoning, non-verbal reasoning, spatial reasoning, English and maths, although the subjects included and the balance of questions depend on the individual school or local authority.
GL tests are generally delivered as multiple-choice assessments, with paper-based and digital options available. For grammar school entry, parents should always check the individual school’s admissions information to confirm which GL subjects and test format are used.
GL Assessment is currently the largest provider of 11+ tests to schools in England, delivering more than 300,000 papers each year.
What Is the CEM Assessment?
CEM, now part of Cambridge Insight, has been used for selective school and grammar school admissions. Its entrance assessments can test verbal, numerical and non-verbal ability, depending on the assessment used by the school.
CEM-style assessments have traditionally focused on skills such as vocabulary, maths, problem-solving, pattern recognition and logical thinking. The exact format can vary, so parents should always check the individual grammar school’s admissions information before preparing.
For 11+ preparation, understanding which assessment your chosen grammar school uses is important because it helps you focus practice on the right question types and skills.
GL vs CEM 11+ Test Formats
GL Question Types
GL Assessment 11+ tests can include several question types designed to assess a child’s English, maths, verbal reasoning and non-verbal reasoning skills. The exact combination depends on the grammar school or local authority.
Common areas include:
- English: comprehension, spelling, punctuation, grammar and vocabulary.
- Maths: arithmetic, problem-solving, number, fractions and data.
- Verbal reasoning: word relationships, codes, sequences and vocabulary.
- Non-verbal reasoning: shapes, patterns, sequences and visual relationships.
Children should practise a range of question types rather than focusing on one area, as the exact GL assessment format can vary between schools.
CEM Question Types
CEM-style assessments can test a combination of verbal, numerical and non-verbal skills, although the exact assessment and format can vary. Current Cambridge Select Insight entrance assessments for 11+ include numerical, verbal and non-verbal ability.
Common areas include:
- Verbal: Vocabulary, word relationships and language-based reasoning.
- Numerical: Number skills, calculations and numerical problem-solving.
- Non-verbal: Patterns, shapes, reflections, rotations and visual relationships.
- Speed and accuracy: Some CEM assessments also assess how quickly children can identify visual matches.
Because grammar schools can use different versions or assessment arrangements, parents should check the individual school’s admissions information before preparing.
GL vs CEM: Which Is Harder?
Preparing for GL and CEM Tests
Preparing for GL vs CEM 11+ tests should begin with understanding the assessment your chosen grammar school uses. Check the school’s admissions information first, as the subjects, question types and test format can vary.
Once you know the format, focus preparation on:
- Core skills: Build confidence in maths, English, verbal reasoning and non-verbal reasoning where relevant.
- Question types: Practise the specific formats your child is likely to encounter.
- Timed practice: Introduce timed questions gradually to improve speed and accuracy.
- Practice papers: Use realistic papers to become familiar with exam conditions.
- Review mistakes: Identify weaker areas and focus future revision on them.
The aim is not simply to complete as many practice papers as possible, but to build the skills, accuracy and confidence needed for the specific assessment.
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GL vs CEM for Grammar Schools: Key Differences
The main difference between GL vs CEM is the way the 11+ assessment is structured and the skills it prioritises. Both can test verbal, numerical and non-verbal reasoning, but the exact content and format depend on the school.
| Feature | GL Assessment | CEM |
|---|---|---|
| Main skills | English, Maths, Verbal & Non-Verbal Reasoning | Verbal, Numerical & Non-Verbal Skills |
| Question types | Broad range of established question formats | Can place greater emphasis on vocabulary, problem-solving and speed |
| Format | Depends on the school | Depends on the assessment |
| Preparation | Practise GL-style question types | Practise the specific skills and formats used |
The most important point is to check which assessment your chosen grammar school uses before preparing. Rather than assuming that all grammar schools follow the same test, use the school’s admissions information to identify the relevant subjects and question types.
