The story of CEM
The Centre for Evaluation & Monitoring (CEM) started as a research unit at Durham University in the 1980s, building educational-assessment systems. It branched into 11+ entrance testing in 2014 with a deliberate design philosophy: papers should be hard to coach. Where GL Assessment papers had predictable structure (one paper per subject, repeatable question types), CEM papers mixed question types across subjects and rotated which question forms appeared each year.
CEM was acquired by GL Assessment — its main competitor — in 2021. Over the following years, former CEM consortiums transitioned to GL-style papers. The CEM 11+ brand was retired in 2024. If you've heard people talking about "CEM" 11+ tests, this is what they're referring to: a legacy test format that shaped a generation of 11+ prep but is now history.
Why CEM was different
Mixed-question papers
Where a GL Verbal Reasoning paper would be 60 minutes of pure VR, a CEM paper would interleave VR, comprehension, vocabulary, and shape-pattern questions in the same paper. Children had to switch question types every few questions and manage time across the whole paper rather than within one subject block.
Rotating question types
CEM papers introduced new question types and dropped old ones year to year, intentionally making "memorise these specific question patterns" a less reliable prep strategy. Children had to be prepared for genuinely-novel questions, not just rehearsed answer styles.
Tighter time pressure
CEM papers were typically harder to finish in the time allowed than GL papers. The implicit message: speed under pressure is part of what we're measuring.
Where CEM was used
- Birmingham — the King Edward VI grammar consortium (the seven KEVI schools) used CEM for many years before transitioning to GL.
- Berkshire — Reading School, Kendrick (Reading), Slough Consortium grammars.
- Wolverhampton / Walsall — the Black Country grammar schools.
- Henrietta Barnett School (London, girls) — selective London grammar that historically used CEM.
- Girls' Day School Trust (GDST) independents — many used CEM for 11+ entry, including Putney High, Streatham & Clapham High, Wimbledon High, Kensington Prep / Notting Hill & Ealing High.
Did the "tutor-proof" claim hold up?
Mostly no. The intention was sound — and CEM papers genuinely were less responsive to rote practice of specific question forms — but the outcome was that the tutoring industry adapted. Specialists in CEM regions developed CEM-style prep approaches: broader vocabulary work, mixed-paper practice, faster-pace drills. Tutored CEM candidates still outperformed untutored CEM candidates by a meaningful margin.
The 2021 acquisition and the 2024 brand retirement effectively concedes that the differentiated-format strategy didn't deliver on the long-term goal. What CEM did leave behind is a legacy of mixed-question practice papers, broader vocabulary expectations, and a generation of tutors who learned to prep for question variety rather than question repetition. Those skills transfer cleanly to GL prep.
What if your child is sitting an "ex-CEM" region in 2026?
Check the consortium's current familiarisation paper — most former CEM regions now use GL Assessment-style papers (with the bespoke regional calibration we describe on the GL Assessment explainer). The exact format may differ from long-established GL regions, so region-specific familiarisation materials are the most accurate guide. A tutor with recent experience in your specific region will know what the latest paper looks like.
CEM-style practice books still have residual value: the mixed-question format teaches a useful skill, namely maintaining focus across rotating question types under pressure. Treat them as supplementary; prioritise GL-style practice papers and (most importantly) recent past papers from your specific consortium.