All IELTS marking takes place at the test centre by trained markers and examiners
Markers are trained to understand the IELTS marking policy and are required to demonstrate that they are marking to standard before they are allowed to mark Listening and Reading papers. Markers are re-tested every two years to ensure that their marking remains up to standard. Systematic monitoring and double marking of a proportion of answer sheets is carried out at each administration.
Examiners for the Writing and Speaking sub-tests are recruited and trained in line with agreed standards. They are required to demonstrate that they are marking to standard every two years in addition to on-going monitoring of their performance.
Candidates receive scores on a Band Scale from 1 to 9. A profile score is reported for each skill. The four individual scores are averaged and rounded to produce an Overall Band Score. Overall Band Scores and scores for each sub-test (Listening, Reading, Writing and Speaking) are reported in whole bands or half bands.
Overall band score
Candidates receive a Test Report Form setting out their Overall Band Score and their scores on each of the four sub-tests: Listening, Reading, Writing and Speaking. Each of the sub-test scores is equally weighted. The Overall Band Score is calculated by taking the mean of the total of the four individual sub-test scores.
Overall Band Scores are reported to the nearest whole or half band. For the avoidance of doubt, the following rounding convention applies; if the average across the four skills ends in .25, it is rounded up to the next half band, and if it ends in .75, it is rounded up to the next whole band.
Thus, a candidate achieving 6.5 for Listening, 6.5 for Reading, 5.0 for Writing and 7.0 for Speaking would be awarded an Overall Band Score of 6.5 (25 ÷ 4 = 6.25 = Band 6.5).
Likewise, a candidate achieving 4.0 for Listening, 3.5 for Reading, 4.0 for Writing and 4.0 for Speaking would be awarded an Overall Band Score of 4.0 (15.5 ÷ 4 = 3.875 = Band 4.0).
On the other hand, a candidate achieving 6.5 for Listening, 6.5 for Reading, 5.5 for Writing and 6.0 for Speaking would be awarded band 6 (24.5 ÷ 4 = 6.125 = Band 6).