Students often ask me to explain why their scores have dropped. For example, one student got a band 7 in speaking last month, but his speaking score dropped to 6 this month. How is that possible?
You might think that the examiner has been too strict or has done something wrong, but this is probably not the case. The best explanation for fluctuating IELTS scores is performance on the day.
Some days you perform well: the topics in the exam seem to suit you, your brain seems to find good answers and remember good words or phrases, and you finish all parts of the test in the time allowed. Other days nothing seems to go right; you simply have a bad day.
Don't worry if your score fluctuates; this is completely normal. One day everything will go perfectly, and you'll get the scores you need!