You revised. You knew the models. You'd read the whole case, every exhibit, more than once. You knew the syllabus — and you still didn't pass.

That is a horrible feeling, and I want to be straight with you about what it usually means: at this level, you almost certainly didn't fail on what you didn't know. You failed on how you wrote down what you did know.

SBL is a technique exam wearing a knowledge exam's clothes. Below are the six mistakes that quietly cost well-prepared people the pass — and the fix for each one, with a weak answer and a strong answer so you can see exactly where the mark moves.

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This is the whole thing, free. No gate, no email needed to read it. Take what's useful.

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The case we'll use — and why it's invented

Every example on this page runs on one company: Halden Leisure Group.

It isn't a past paper, and it isn't whatever was on your exam — I don't know what was on it, and anybody telling you they do is selling you something. It's invented on purpose, for two reasons. The six mistakes are the same whatever the case is, so tying this to one sitting would date it. And an invented company can carry exactly the flaws the lesson needs.

The task throughout: evaluate whether Halden should acquire AquaZon.

Hold on to that word. Evaluate. It comes back.

❌ Mistake 1 — You wrote what you knew, not what they asked

You see an acquisition question, and you reach for the framework. You set it out neatly. You define the parts. And it feels productive — because every exam before this one paid you for exactly that.

Here, it pays nothing. Knowledge and theory on their own score zero. The mark isn't for knowing the model. It's for making a point that answers the requirement, and tying it to this case.

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Weak — earns nothing: "An acquisition can be evaluated using suitability, acceptability and feasibility. Suitability asks whether it fits the strategy. Acceptability considers risk and return. Feasibility considers resources. AquaZon should be assessed against all three."

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Nothing in that is wrong. It's all perfectly correct. And it earns nothing — because you can't tell which company it's about. There isn't a single Halden fact in it. Paste it into any acquisition question, in any year, and it fits just as well. That's a definition wearing an answer's clothes.

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Strong — full marks: "The acquisition is suitable because Halden's margin has collapsed to 3.4% under price competition, while AquaZon runs at 14% in a segment the budget rival doesn't serve — which means the deal directly attacks the margin erosion threatening the core business, and moves Halden somewhere the competitor can't cheaply follow."

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Same framework. Same knowledge. But it names the lens and then stops talking about the framework and starts talking about Halden — 3.4% against 14%, a specific competitor, a specific segment. Then it goes one step further with which means, and says what that fact actually does to the business.