Families targeting Colchester Royal Grammar School ask the same first question: what exactly should we practise? The honest answer is that good preparation is not generic 11+ drilling — it is preparation shaped around how this particular school selects. CRGS admits boys through the Essex CSSE 11+, a written-answer exam that looks and feels different from the multiple-choice papers used in most other regions, so the smart plan is to match your child's practice to that format from the very start. This guide walks through the school, the test, what to practise, a realistic timeline, and how to keep a calm head on the day.
About Colchester Royal Grammar School
Colchester Royal Grammar School (CRGS) dates from 1539 and is one of the oldest grammar schools in England. It is a boys' foundation grammar with a mixed sixth form, and it uniquely offers state boarding alongside day places, which widens its catchment well beyond the town itself. Selection at eleven is by the CSSE 11+. For families weighing their options across the county, it sits among eight state grammars in Essex and Southend, most of which sit within the Consortium of Selective Schools in Essex and share the CSSE paper.
- Location: Colchester, Essex
- Intake: Boys (mixed sixth form)
- Founded: 1539
- Type: Foundation grammar, with state boarding available
- Admissions test: CSSE 11+ (Consortium of Selective Schools in Essex)
You can read our full school profile for more, and see how CRGS sits within the wider county in our grammar school directory. Always confirm this year's exact admissions arrangements, deadlines and open-day dates on the school's own site: crgs.co.uk.
How selection works at Colchester Royal Grammar School
CRGS selects through the CSSE 11+, the paper set by the Consortium of Selective Schools in Essex. This is one of the most distinctive 11+ formats in the country, and understanding it changes how you prepare. Unlike GL Assessment papers used in Kent, Buckinghamshire or Birmingham, CSSE does not test verbal reasoning or non-verbal reasoning as separate subjects. Instead, it uses two written-answer papers: English and Mathematics.
The two things that catch families out most are worth spelling out. First, the maths is largely free-response — your child writes the working and the answer, with no multiple-choice options to guess between or work backwards from. That rewards genuine method and neat, checkable working rather than clever elimination. Second, the English paper includes a comprehension element and a marked creative-writing task, so quality of written expression carries real weight. Both papers are age-standardised, which means every child's raw mark is adjusted for their age in months so that younger, summer-born boys are not disadvantaged against classmates almost a year older. We explain how age standardisation and standardised scores work in our exam guides. Pass marks and how a mark converts to a place vary year to year and by school, so do not rely on figures quoted on older websites — always treat crgs.co.uk as the authority.
What to practise for this test
Because CSSE is written rather than multiple-choice, practise the way the real paper works from the beginning. Free-response maths and extended writing are skills that reveal themselves only under a pen and a clock, so build both deliberately:
- Free-response maths: arithmetic fluency, fractions, decimals, percentages, ratio, area and perimeter, and multi-step word problems — always writing full method. Drill the underlying topics with our free worksheets, then move to timed mock papers.
- Comprehension: reading a passage closely and answering in full sentences, including inference and "how do you know?" questions that ask for evidence from the text.
- Creative and continuous writing: planning quickly, opening strongly, using varied sentence structure and precise vocabulary, and finishing within the time. This is where marks are won and lost, so give it a genuine weekly slot.
- Vocabulary and spelling: a rich vocabulary is the single best predictor of both comprehension and writing scores. Ten new words a week, used in sentences, compounds over a year.
Because CRGS shares the CSSE format with the other consortium schools, our centre-specific mocks let you rehearse the exact paper style your son will sit, rather than a generic reasoning test.
A realistic preparation timeline
Steady habits beat last-minute cramming every time. There is no need to start formal papers early; the goal in the early years is a strong reader who enjoys learning.
- Year 4 and the summer before Year 5: daily reading across fiction and non-fiction, times tables secure to 12×12, and mental-arithmetic games. No timed papers yet — build curiosity and confidence.
- Year 5 autumn: 15–20 minutes of daily topic practice using our free worksheets, plus one short piece of writing a week that a parent reads back and gently improves.
- Year 5 spring — register: registration for CSSE opens ahead of the autumn test, so diarise it early. Check our key dates page and confirm the exact window on crgs.co.uk; missing the deadline cannot be undone.
- Year 5 summer into Year 6 autumn: one full timed mock paper a week. Review errors far more carefully than the raw score — the mistakes are the lesson.
- Final six weeks: switch to centre-specific CSSE papers so the format, timing and answer style are completely familiar before the real day.
The CSSE test is normally sat in the autumn term of Year 6, with results following weeks later, but confirm the precise dates for your child's year on the school website.
On the day and after
By test day the preparation is done; your job is to protect your son's composure. A child who has sat ten timed mocks at the kitchen table walks into the hall treating it as the eleventh, which is exactly the feeling you want.
- Have an early night before, a proper breakfast, and a relaxed, unhurried arrival.
- Remind him of one simple rule: if a question is stuck, leave it, keep moving, and come back — pace matters more than any single mark, especially on free-response maths where showing method still earns credit.
- For writing, spend a minute planning before starting; a clear beginning, middle and end beats a rushed, unfinished flourish.
- Afterwards, keep it low-key. Ask how it felt, not what he scored, and avoid post-mortems that only feed anxiety.
Whatever the outcome, remember that a qualifying mark and a place are not the same thing, and that Essex has several excellent selective and non-selective options. Keep the process in proportion for him.
Frequently asked questions
Does the CRGS entrance exam include verbal or non-verbal reasoning?
No. Unlike GL Assessment regions, CSSE tests only English and Maths as written-answer papers. There are no separate verbal-reasoning or non-verbal-reasoning sections, though strong vocabulary and logical thinking still help across both papers.
Is the CRGS maths paper multiple-choice?
No — CSSE maths is largely free-response, so your son writes his own working and answers. That makes clear method and careful checking far more valuable than guessing strategies, so practise on written papers rather than tick-box ones.
When does my son sit the test?
The CSSE 11+ is normally taken in the autumn term of Year 6, with registration opening earlier in the year. Because dates shift annually, always confirm the current timetable on crgs.co.uk and cross-check our key dates page.