11+ Maths Exam Technique: GL, ISEB and the Three-Pass Rule

Welcome to the first in my series of 11+ subject guides. Navigating the 11+ can feel a little like steering a ship through a storm — but with the right chart in hand, it is entirely possible to reach the destination with calm and confidence. At David Bell Education, that's always the guiding principle: achievement without anxiety.

I've spent over twenty years in education, including six as Headteacher of a leading UK preparatory school, and in that time I've sat alongside hundreds of families navigating exactly this moment. You can read more about my background and approach here.

Drawing on that experience, this guide is designed to demystify the 11+ Maths exam format — breaking down what GL, ISEB and independent papers actually involve, and sharing one of the exam techniques I return to again and again with pupils: the Three-Pass Rule — so your child walks into the exam hall feeling prepared, not pressured.

11+ Maths Exam Format: GL, ISEB and Independent Papers Compared

Not all 11+ Maths papers are created equal, and the right strategy depends entirely on which one your child is sitting. Broadly, families encounter three main types of assessment.

Assessment Type	Format & Delivery	Core Characteristics
GL Assessment	Usually paper-based, multiple-choice	Closely aligned with the National Curriculum (KS2). Questions are generally straightforward but demand rapid, accurate calculation — time pressure is the main challenge.
ISEB Common Pre-Test	Online, multiple-choice, adaptive	Difficulty adjusts based on the pupil's previous answers. Because the test is linear — you must answer to move on — success is about a steady, measured pace rather than skipping ahead.
Independent Bespoke	Paper-based, standard written-answer format	Set by individual schools, often in consortiums, and testing deeper mathematical reasoning. Pupils show their working, and partial marks are often available for a correct method even where the final answer slips.

Understanding which paper your child is actually sitting is the first step in stripping away the fear of the unknown — vague anxiety about "the exam" becomes a concrete, manageable plan once you know the format in front of you.

The Three-Pass Rule: An 11+ Maths Exam Technique for Calm, Confident Timing

For paper-based exams — GL Assessment or independent bespoke papers — one of the greatest sources of anxiety is simply the ticking clock. A child hits a difficult multi-step problem on page two, panics, spends ten minutes wrestling with it, and misses out on easy marks waiting further down the paper.

Three-Pass Rule diagram for the 11+ Maths exam — Quick Wins, Thinkers, Tough Nuts. — The Three-Pass Rule Helps Students Tackle Tricky Maths Papers

The Three-Pass Rule is one of the exam protocols I teach every pupil I work with, precisely because it removes that panic. It's less about maths ability and more about giving a child a clear plan for when to spend their time — which, in my experience, is half the battle.

Pass 1: The Quick Wins

On the first sweep through the paper, your child answers only the questions they know how to solve immediately. Anything that looks overly complex or reading-heavy gets circled, and they move straight on.

The benefit: this secures the "low-hanging fruit" early — banking easy marks and settling the nerves before anything harder is attempted.

Pass 2: The Thinkers

Once they reach the end of the paper, they return to the beginning and tackle the circled questions — problems they do know how to solve, but which need a little extra working, like long division or a multi-step word problem.

The benefit: they're now tackling mid-level questions with the confidence of having already completed a large chunk of the paper.

Pass 3: The Tough Nuts

With whatever time remains, your child attempts the hardest, least familiar questions. For multiple-choice papers, this is the moment for educated deduction. For standard-format papers, it's about writing down as much logical working as possible to scrape together partial marks.

The benefit: if time runs out while wrestling with a Tough Nut, it isn't a disaster — the marks for the rest of the paper are already safely banked.

Core Subject Areas to Master

The syllabus is broad, but a child's revision time is best invested in the foundational pillars that pay dividends across almost every 11+ Maths paper:

The Four Operations — genuine fluency in addition, subtraction, multiplication and division is non-negotiable. It's the engine driving everything else.
FDP (Fractions, Decimals and Percentages) — the ability to convert seamlessly between the three is perhaps the single most heavily tested skill in 11+ problem-solving.
Ratio and Proportion — often dressed up as recipe adaptations or sharing money between friends, but always rewarding clear, methodical working.
Word Problems — the modern 11+ rarely asks a child to simply "solve an equation." They must extract the maths from a paragraph of text. Encouraging your child to underline key numbers and instructional words — "altogether," "difference," "remaining" — is a small habit that makes a real difference.

A Steady Hand Makes the Difference

Mathematics at this level isn't only about raw calculation — it's about resilience. When a child understands the shape of the paper in front of them and has a structured protocol like the Three-Pass Rule to fall back on, the panic drains out of problem-solving, and their true ability is finally free to show through.

If you'd like more tailored guidance for your child's specific paper — whether that's GL, ISEB, or an independent bespoke exam — I'd be glad to help. You can find out more about how I work with families or get in touch directly to talk through where your child is starting from.