When parents ask us why their child is stuck at a B3 for English despite working hard, the answer is almost always the same. And it's not what they expect to hear.
It's not vocabulary. Students at B3 typically have adequate vocabulary. It's not length — many B3 essays are longer than A2 essays. It's not even grammar, which is rarely the deciding factor at the margin between these grades.
The difference, almost every time, is whether the essay has a real argument.
O-Level English markers are looking for essays that take a position and defend it coherently — where each point builds on the last, where evidence is used to support a specific claim, and where the writer demonstrates genuine thinking rather than a tour of related ideas.
A B3 essay typically has points. An A2 essay has an argument. The difference is that points are self-contained — you could rearrange them without changing the essay. An argument has a direction: each paragraph moves the reader towards a conclusion that emerges from the reasoning, not just the topic.
Students who work hard tend to produce essays that are competent and thorough. They cover the relevant points. They use examples. They write clearly. These are real strengths — and they reliably produce B3.
What they often lack is the discipline of arguing rather than discussing. Discussion moves across a topic. Argument moves through a position. The shift from one to the other is what gets students to A2.
This isn't a writing problem — it's a thinking problem. Students who argue well in essays have usually practised forming and testing positions, not just collecting and presenting information.
Many B3 essays open with an introduction that summarises what they will discuss. A2 essays open with an introduction that stakes a claim. "Social media has both benefits and drawbacks" is a summary. "Social media's most significant harm is not addiction or misinformation, but the erosion of the capacity for extended, independent thought" is a position. The second one tells you where the essay is going — and commits the writer to defend it.
Claim → Reason → Evidence → Explanation → Link. The step most students miss is Explanation — actually explaining why their evidence proves their claim, rather than presenting the evidence and moving on. Markers reward explicit reasoning. The connection between evidence and claim should never be left implicit.
A2 essays acknowledge complexity without abandoning their position. Addressing a counter-argument — and then explaining why the main argument holds despite it — demonstrates sophisticated thinking. Most B3 essays avoid counter-arguments entirely, which makes them feel one-sided rather than well-reasoned.
At Lumi, when we work on English essays, we spend significant time before any writing happens — forming the argument, testing it, identifying what would undermine it, and deciding how to respond to that. The writing comes after the thinking, not alongside it.
Students who arrive with a well-formed argument before they write rarely produce B3 essays. The writing almost takes care of itself. Students who write to discover their argument — which is the default for most secondary students — produce essays that read like tours of a topic, not arguments about it.
Lumi's small group classes in Bishan and Clementi are built around thinking before writing. Come and try a free class — no commitment.
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