> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://helpdesk.medentry.edu.au/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# The percentiles that I get are sometimes high and sometimes low. Why is this?

It is normal for your scores and percentiles to change over the course of your preparation. Several factors impact the score you receive during a mock exam - for example, your level of concentration, stress, timing technique - even luck with guessing! Answering just a few questions incorrectly or correctly can make a big difference to your scores and percentiles.
It is important to avoid placing too much emphasis on the ups and downs of your practice scores from week to week, and avoid spending excessive time and energy worrying about them. Instead, focus on what you can do about it - and how to improve