On the official indicative table, Band 6 in Listening is an average of 23 marks out of 40 and Band 7 is 30. Seven raw marks — that is the entire gap between "Competent" and "Good". And a chunk of the marks test takers drop in that zone have nothing to do with understanding English. They die to spelling, to word-count violations, to losing the thread of a recording that plays once, and to slips made while moving answers onto the answer sheet or screen. You heard the answer. You knew the answer. You still lost the mark.
That is bad news dressed as good news. Bad, because these losses feel invisible — you walk out believing you understood everything, and you did. Good, because mechanical errors respond to mechanical fixes far faster than comprehension responds to months of study.
One caveat before the diagnostic — ielts.org itself says the precise marks needed "will vary slightly from test version to test version". The 23 and 30 are averages, not guaranteed cut-offs. The gap is real either way.
The failure
Call it score leakage: the habit of marking practice tests as simply right or wrong, so that a mark lost to spelling looks identical to a mark lost to not understanding the recording. If you never separate the two, you will keep prescribing yourself "more listening practice" for problems a pencil could fix. The cure is a diagnostic, run on your next practice test, with nothing but that pencil and a count. Four failure modes — for each: how to detect it, how to fix it, and the official rule that makes it fatal.
Failure 1 — spelling
Detect it. Mark a practice test. Now go back through every wrong answer and put an S next to each one where you wrote the right word, wrongly spelt — accomodation, Febuary, recieve. Count the S marks. That number is a band-relevant quantity: on the indicative table, dropping from 30 to 27 through spelling alone is the difference between averaging Band 7 and not.
Fix it. Spelling is a closed problem in Listening, because the answers that must be written out are short — names, places, dates, everyday nouns from forms and notes. Keep a personal list of every word you have ever S-marked and drill only that list. You are not learning English — you already knew the word. You are learning to transcribe it.
The rule. ielts.org, on writing answers:
"You should be careful when writing your answers on the answer sheet because you will lose marks for incorrect spelling and grammar."
There is no partial credit for a recognisable attempt. Wrongly spelt is wrong.
Failure 2 — word-limit violations
Detect it. On the same marked test, re-read the instruction above every completion task and circle any answer of yours that exceeds the stated limit — even a correct one. "The main city library" against a two-word limit is a lost mark carrying a right answer inside it.
Fix it. Before the recording starts, write the limit's number next to the question block — a bare "2" is enough — and after the recording, count words in every completion answer against it. Articles like a and the are usually the excess: train yourself to strip them unless the sentence collapses without them. A hyphenated form on the page counts as it is printed — when in doubt, prefer the shortest answer that is still the words you heard.
The rule. ielts.org's format pages state the instruction style for Listening:
"A word limit is given, for example, 'NO MORE THAN TWO WORDS AND/OR A NUMBER'."
And in its Reading question-type descriptions, ielts.org spells out the consequence in so many words: "You will lose the mark for writing more than the word limit." The instruction is not advice. It is the marking key.
Failure 3 — losing your place in a once-played recording
Detect it. Look at where your wrong answers sit. Comprehension errors scatter; place-loss errors cluster. A run of three or four blanks or wild guesses in a row is the signature of a lost place — you missed one answer, kept hunting for it, and the recording moved on without you. Write down the question number where each run begins.
Fix it. Adopt a hard abandonment rule in practice: the moment you hear content that belongs to the next question, the previous one is over — put a dash, move your eyes down, catch up. One dropped mark is recoverable; a dropped minute is four or five. Use the pauses before each part to read ahead, so you always know what the next answer should sound like — that is your anchor for re-finding your place.
The rule. ielts.org, on the recordings:
"You will hear the recordings once only."
There is no replay and no rewind in any delivery mode. A question you chase after its moment has passed is a question that takes hostages.
Failure 4 — transfer and entry slips
Detect it. On paper practice, compare your question booklet against your answer sheet, line by line, and count every mismatch: answers on the wrong line, a 15 that became 50, an answer legible in the booklet and ambiguous on the sheet. On computer practice, check that every answer box actually contains what you meant — no autocorrect exists, and a stray character is a wrong answer.
Fix it. On paper, transfer in blocks of ten and check question numbers at each block boundary — one shifted line can corrupt everything after it. On computer, use the review time to verify the boxes you were least sure you filled, not to relitigate hard questions.
The rule. ielts.org, on the paper test:
"You will have 10 minutes at the end of the test to do this."
Ten minutes is generous — long enough to transfer forty short answers twice. Losing marks inside it is pure leakage. On computer there is no transfer stage and no ten minutes: IDP states that "No extra time will be given to transfer your answers" and that "You will only have 2 minutes to review your answers at the end of the test." Type it right the first time.
What is not official here
- No official statistic says how many marks are lost to mechanical errors. The "chunk" in this page's opening is qualitative and stays that way — your own S-count is the only number that matters, and you generate it yourself.
- The 2-minute computer review figure comes from IDP and a British Council blog — both official IELTS partners — but the ielts.org pages we checked do not state a number of minutes.
- The 23 and 30 are indicative averages, published by ielts.org with the explicit caveat that required marks "will vary slightly from test version to test version". No official full 0–40 conversion chart exists — any complete one you find elsewhere is unofficial.
- The word-limit penalty sentence quoted above sits in ielts.org's Reading question-type descriptions; the Listening pages state the limit instruction itself without repeating the penalty sentence.
What actually costs you
- Marking practice tests right/wrong only — so spelling losses masquerade as listening losses.
- Writing a correct answer that is one word too long, and never noticing why it was marked wrong.
- Chasing a missed answer while the recording plays on — one lost mark becoming four.
- Treating transfer as an afterthought instead of a checked, block-by-block procedure.
- Believing every dropped mark means your English is not good enough. Run the diagnostic first — some of those marks are mechanical, and mechanical marks come back fast.
Try one
Run the diagnostic on a real task, not a memory of one.
[Try a Listening task →] — one full task, marked, no card required.