The real danger isn't a low score — it's a fake high one
A low practice score stings, but it's useful: it tells you where to work. An inflated one is far worse, because it feels like good news. You stop revising the things that are actually weak, you walk in confident, and you find out on results day — when it's too late and your money's gone — that nobody had ever been honest with you.
Most people who are "stuck" at a band aren't lazy. They're studying hard against feedback that flatters them. The shock on exam day isn't bad luck. It's the gap between a tool built to make you feel good and an examiner paid to mark you straight.
Why free tools inflate scores
It usually isn't a bug — it's how the tool is built. Most free checkers want you to come back and tell your friends, and a cheerful "Band 7!" does that better than an honest "Band 6, here's why." Encouragement drives engagement; harsh truth doesn't.
General AI chatbots have the same tilt baked in deeper. They're trained to be polite, agreeable and supportive, so when you ask "is this Band 7?" they lean toward yes. And almost none of them check the one thing examiners check first: did you actually answer the question that was asked? They grade your English in a vacuum and ignore whether you addressed the whole prompt — which is exactly the part that caps real bands.
Five concrete signs your score is inflated
You don't need an examiner to smell a soft mark. Run your tool against these five tests:
1. It's always 7 or above. If every essay you paste — rushed, off-topic, brilliant — lands at 7+, the number isn't measuring your writing. It's a default.
2. There's no per-criterion breakdown. A real band comes from four separate scores: Task Response, Coherence & Cohesion, Lexical Resource, Grammatical Range & Accuracy. One overall number with no breakdown is a guess wearing a uniform.
3. It never mentions whether you answered the question. If the feedback talks about commas and "good vocabulary" but never says whether you addressed every part of the prompt or held a clear position, it's skipping the criterion that matters most.
4. Only vague praise, no quoted evidence. "Great structure, strong ideas, well done" is horoscope feedback — it fits any essay. A trustworthy mark quotes your sentences back to you as proof.
5. The score barely moves when you sabotage the essay. This is the killer test. Delete your conclusion, contradict your own argument, or paste a paragraph that ignores the question. If the band stays roughly the same, the tool isn't reading your essay — it's rating your vibe.
How to sanity-check a mark yourself
Take any score a tool gives you and hold it against the official descriptors. For Task Response, ask: did I address every part of the prompt, take a clear position, and develop my ideas — or did I half-answer? For Coherence, can a stranger follow my argument paragraph to paragraph without effort? For Lexical Resource, did I use less-common words correctly, or reach for impressive ones I got wrong? For Grammar, are there frequent error-free sentences, or do small slips repeat in every paragraph?
If your honest answers are shaky but the tool said 7.5, trust your answers, not the tool. A band you can't justify against the descriptors is a band you can't rely on.
What a trustworthy mark actually looks like
An honest assessment gives you three things for each of the four criteria. First, a band — a specific number per descriptor, not one comforting average. Second, the evidence — the exact sentence from your essay that earned or cost you that band, quoted back so you can see it. Third, the smallest fix — the single change that would move that criterion up, so you know precisely what to do next.
That's the difference between feedback that flatters and feedback that improves you. One leaves you feeling good and learning nothing. The other occasionally annoys you and slowly makes you better.
Before you book the test
Don't walk into a paid exam on the word of a tool that's never told you anything you didn't want to hear. Get one strict, honest read — per criterion, with evidence — and fix the criterion that's actually holding you back. Better a hard truth now than an expensive surprise later.