Main sources of unofficial ranking data

League tables and rankings are an increasingly important source of information about the quality of institutions and programmes and also as a means of comparing them.

How the rankings/league tables are measured

There is a great variety of measures/criteria used and the weightings given to them in the main rankings and league tables.

Pros and cons of rankings and league tables

League tables and rankings have the advantage of giving a quick impression of relative quality, but they need to be read with care and not used as the only source of information.