How the rankings/league tables are measured
Some also use data collected through their own surveys, which again are subject to controls and checks. Because of the importance placed on this, the publications do give considerable detail on their websites as to the lengths they will go to ensure the reliability and credibility of the data in their rankings and tables. In the interests of brevity, this information is not included here: if you want to know more, go to the website of the ranking or league table you are interested in:
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