How to read university rankings: 45% of a QS position is other people's opinion

Nearly half of a QS rank is a survey

QS publishes its methodology, and it is all there. Academic reputation, 30%: academics are asked to name the universities strongest in their field. Employer reputation, 15%: the same question, put to companies that hire.

Together that is 45% of the final position. Nearly half of where a university sits in QS is not a measurement but a sum of opinions, most of them held by people who have neither studied nor taught there.

That does not make the ranking useless. Reputation is a real thing: it affects how a degree is read when someone is hiring. But it answers "what do people think of this university", not "what is the teaching like".

What else is inside the number

The rest of the QS weight: citations per faculty 20%; global engagement 15%, being international faculty, international students and international research network at 5% each; employment outcomes 5%; sustainability 5%.

And just 10% for the faculty-student ratio — the only indicator with any bearing on how much attention you personally will get.

Times Higher Education is built differently: five pillars, with teaching at 29.5% and the research environment at 29%, and research quality split into citation impact (15%) and three further measures at 5% each. But there too, teaching is measured indirectly — through surveys and ratios, not through what happens in the room.

Why two rankings disagree

A university 40th in QS and 95th in THE is not an error. It means its reputation is strong and the things THE weights are weaker, or the other way round.

So comparing universities across rankings is meaningless and comparing them inside one is not. More useful still are subject rankings: an institution's overall place says little about one department.

What this means when choosing

A ranking answers one question: how strong the university's name is in the academic world. For an academic career, or where it matters how recruiters read a degree, that is a number worth having.

It says nothing at all about whether your subject is strong there, what language the programme runs in, what it costs, or whether you would be admitted. Those are the things that decide whether this works for you.

So: shortlist by subject, language and budget first, and look at the ranking inside that list. The other order produces a list of universities that will not admit you or that you cannot pay for.

How we show rankings

Each university in our catalogue carries its world position and, for China, its position inside the country — exactly as the ranking publishes it, with no recalculation and no "top 50 according to our agency".

Where there is no position the field is empty. A university without a world ranking is not a poor university: small and specialised institutions do not enter the tables, and nor do those that do not submit data.