GL vs CEM vs CSSE:
The Definitive 11+ Exam Board Guide
The 11+ exam is not nationally standardised. The exam your child sits depends on the school and region. Understanding the differences between GL Assessment, CEM, and CSSE is the first and most critical step in effective preparation.
Why does the exam board matter?
Studying the wrong material can waste months of preparation. A child preparing for GL-style verbal reasoning (21 specific question types) will be poorly prepared for a CEM exam that integrates vocabulary into comprehension passages. Always verify your target school's exam board before purchasing any resources.
Side-by-Side Comparison
The three main 11+ exam boards — GL Assessment, CEM, and CSSE — differ significantly in format, predictability, and the skills they test. The table below compares all key dimensions to help parents choose the right preparation strategy for their target school.
| Feature | GL Assessment | CEM | CSSE |
|---|---|---|---|
| Format | Multiple choice (OMR sheets) | Mixed — multiple choice & written | Written papers with full answers |
| Predictability | High — 21 known VR question types | Low — designed to resist tutoring | Medium — consistent paper structure |
| Verbal Reasoning | Dedicated section with 21 types | Integrated into English/Verbal Skills | Applied Reasoning within English paper |
| Non-Verbal Reasoning | Dedicated section | Sometimes included, varies by school | Not typically a separate section |
| Vocabulary Emphasis | Moderate | Very high — synonyms, antonyms, cloze | High — comprehension-based |
| Maths Style | Standard KS2 + problem solving | Numerical reasoning, less formulaic | Problem-solving with working shown |
| Time Pressure | High — strict per-section limits | Very high — fast pace throughout | Moderate — longer papers |
| Key Regions | Kent, Bucks, Barnet, Bromley | Birmingham, Walsall, some London | Essex (KEGS, Colchester, Southend) |
GL Assessment
GL Assessment is the most widely used 11+ exam provider in England, administering tests for grammar schools across Kent, Buckinghamshire, Barnet, Bromley, and other regions. GL papers use a multiple-choice format with Optical Mark Recognition (OMR) answer sheets, making them the most predictable and systematically preparable of the three major exam boards.
The 21 Verbal Reasoning Question Types
GL is known for its 21 distinct verbal reasoning question types, including code-breaking, number codes, letter analogies, hidden four-letter words, word analogies, and more. Children who systematically learn and practise all 21 types have a significant advantage, as the format is predictable.
CEM (Centre for Evaluation and Monitoring)
CEM exams, developed at Durham University, are specifically designed to be less predictable and harder to tutor for than GL Assessment. CEM integrates verbal reasoning directly into comprehension-style passages rather than testing it as a separate section, placing exceptionally heavy emphasis on broad vocabulary and reading speed over memorised question types.
Vocabulary is King
CEM exams rely heavily on advanced vocabulary — synonyms, antonyms, and cloze tests (fill-in-the-blank). Standard primary school spelling lists are insufficient. Children need exposure to complex words like squalor, reproach,predilection, and subterranean.
CSSE (Essex Consortium)
The Consortium of Selective Schools in Essex (CSSE) administers its own distinct 11+ exam format for grammar schools including Colchester Royal Grammar School, King Edward VI, and Southend High School. Unlike GL and CEM, CSSE papers require children to write full answers and show their mathematical working, testing depth of understanding rather than speed of elimination.
How my11plus.uk helps with every exam board
Our Parent Dashboard provides performance analytics that identify weaknesses specific to each format — whether it's GL code-breaking, CEM cloze tests, or CSSE problem-solving. Track mastery across all question types for just £9.99/month.