What is the Slough Consortium 11+?

The Slough Consortium consists of four highly sought-after selective state grammar schools (including Herschel and Langley Grammar Schools) that cooperate to run a joint admissions examination, meaning candidates only need to sit one set of exams.

The Complete Parent's Guide to the Slough Consortium 11+

Q: Will Non-Verbal Reasoning still be tested in the Slough Quest Assessment?

Yes. Unlike some other consortiums that are dropping it, the Slough Consortium has indicated that the core subjects—English, mathematics, verbal reasoning, and non-verbal reasoning—will remain in their new Quest format.

David Bell M.Ed., FCCT, FCMI
7 days ago
3 min read

If you’re considering grammar schools in Berkshire for your child, the Slough Consortium is an option that frequently comes up. Navigating the 11+ process can feel overwhelming, but understanding the consortium’s structure, the exam format, and the impending changes to the test provider is the first step toward a successful strategy.

Here is a detailed guide to the Slough Consortium 11+ to help you plan effectively.

What is the Slough Consortium?

The Slough Consortium consists of four highly sought-after selective state grammar schools that cooperate to run a joint admissions examination. This shared testing process means that candidates only need to sit one set of exams, and their results can be considered by all four participating schools.

The four schools are:

Herschel Grammar School
Langley Grammar School
St Bernard's Catholic Grammar School (Note: This is the only mixed, Catholic, state, voluntary-aided grammar school in the country, and faith is a factor in their specific admissions criteria).
Upton Court Grammar School

By operating together, the consortium ensures fairness and consistency while reducing the testing burden on children.

student taking exam paper for Quest Assessment. — Slough Consortium is Moving to Quest for 2028 Entry

The Current 11+ Exam Format (For Entry Up to 2027)

For pupils applying for entry in September 2027 (testing in September 2026), the exam is provided by GL Assessment.

The format is robust, designed to test a wide range of academic abilities and reasoning skills . The assessment consists of two multiple-choice papers, each lasting around 50 to 60 minutes.

The papers cover four distinct areas:

English: Testing comprehension skills, vocabulary knowledge, spelling, and grammar.
Mathematics (Numerical Reasoning): Covering operations with fractions and decimals, algebra manipulation, ratio, proportion, and multi-step word problems.
Verbal Reasoning: Assessing logic-based word puzzles, synonyms, antonyms, word codes, and letter sequences.
Non-Verbal & Spatial Reasoning: Involving shape analogies, odd-one-out puzzles, rotations, reflections, and sequences requiring logical deduction.

The tests are age-standardised to ensure fairness across the cohort, meaning younger students in the year group are not disadvantaged. Currently, the qualifying standard score required to be eligible for consideration for a place is usually set around 111.

Important Update: The Shift to Quest Assessment (2028 Entry Onwards)

A significant change is on the horizon. For students aiming for Year 7 entry in September 2028 (who will sit the exam in September 2027), the Slough Consortium is moving away from GL Assessment and adopting Quest Assessment as their test provider.

What this means for preparation:

While the provider is changing, the Slough Consortium has indicated that the core subjects—English, mathematics, verbal reasoning, and non-verbal reasoning—will remain. This is slightly different to the Latymer School and Dorset Consortiums, who are dropping non-verbal reasoning with their move to Quest.

For students currently in Year 4 or below, preparation should remain broad, ensuring strong foundations across all four disciplines, but tutors and parents must stay alert for sample materials released by Quest over the next year to understand any nuances in question phrasing or test structure.

Registration and The Application Process

Navigating the bureaucracy is just as important as the academic preparation.

Registration for the Exam: You must register your child to sit the test via the Slough Consortium portal, usually between May and mid-June of Year 5. Crucially, registering for the test is not an application to a school.
The Exam: The test takes place in September at the start of Year 6.
Results: Results are released in October, purposefully timed before the deadline for the Common Application Form (CAF).
The CAF: Once you have your child's standardised score, you then formally apply for the specific schools via your Local Authority's CAF. Knowing the score beforehand allows you to make informed, realistic choices on your application form.

Preparation Strategies for the Slough 11+

Because the Slough test includes reasoning (which is rarely taught in primary schools), preparation requires a dedicated approach.

Vocabulary is King: Success in both the English and Verbal Reasoning sections hinges on a broad, mature vocabulary. Encourage daily reading of challenging material, including classic fiction and non-fiction.
Master the Basics in Maths: Numerical reasoning requires a rock-solid foundation in Key Stage 2 arithmetic. Speed and accuracy with times tables, fractions, and percentages are non-negotiable before tackling complex, multi-step word problems.
Familiarisation: Whether facing GL or the incoming Quest format, students must be comfortable with multiple-choice answer sheets. Practice under timed conditions is essential, as pacing is often the biggest hurdle for bright children.