https://www.topuniversities.com/university-rankings/world-university-rankings/2021
https://www.timeshighereducation.com/world-university-rankings/2021/world-ranking#!/page/0/length/25/sort_by/rank/sort_order/asc/cols/stats
— volatility in ranking
I feel ARWU is slightly more stable, but all big3 league tables show very high volatility. A reputable university often has 100+ years of history, but its ranking seems to depend on the last few years.
The volatility partly reflects 1) evolution of ranking criteria and 2) fast change in real research output — the reality we must accept.
— overall validity of ranking
Every reader (except the UChicago graduates) of these rankings complain about, criticize (or ridicule) the discrepancies, even within a single system over a 10Y span — ridiculous volatility!
The more criticism, the more eyeballs. It reminds me of the Option pricing theories — grossly imperfect, but largely validated by years of observation in the field. If there’s some fatal flaw, then people would stop following.
#1 Target audience — aspiring students and their parents. As such, top universities are really luxury brands , partly for vanity. Kyle said college ranking is mostly about prestige, which is mostly based on research output
— Comparing The big-three international rankings 1) QS 2) THE, both UK-based, and 3) ARWU i.e. the Shanghai ranking
ARWU is mostly about the A in ARWU — “academic” i.e. research output, which is hardly visible to the lay public. ARWU doesn’t care about international faculty or student representations, for example.
QS and THE both consider reputation among academics and employers, what I call professional reputation. It’s different from mass-media reputation, which influences the lay public’s opinion.
https://www.topuniversities.com/student-info/university-news/comparing-world-university-rankings-qs-shanghai offers a simplistic yet useful summary:
- If you’re looking for a university that has an enviable record of consistently producing high-quality research, try the Shanghai ranking.
- If you’re looking for a university which is well-regarded by employers and other academics, and will set you up perfectly for a well-paid graduate job, the QS World University Ranking should be your first port of call.
- And, if you want to see a ranking which attempts to reflect both a university’s research impact and its reputation, the Times Higher Education ranking is worth checking out, as it considers more variables than the other two. Of course, this might mean it provides less specific information that could be useful for you, but it’s good for a broad overview.
- Lastly, it should be noted that both the THE and QS rankings make an effort to consider how international a university is (in QS’s case, this is done by measuring the proportion of international students and faculty members). If you’re looking to study abroad, both these rankings will potentially have more to offer you. Personally, I think this item reflects an inclusive, diverse culture.
— Sg: NTU is close behind NUS in QS, THE, and slightly behind on ARWU. SMU is sometimes ranked. No 4th university
NUS and NTU are within top 100 in ARWU 🙂 whereas HK has none.
— ARWU publishes a “greater China(HK/TW) college ranking beyond research“.. considers quality of faculty and education.
The percentage weightage inherites a blended bias for research output, and doesn’t care about peer or employer perceptions.
— HK: HKU, CUHK, HKUST are comparable to NUS/NTU.
— Australia, Germany, Sweden all trail behind SG in THE, not in ARWU.
QS ranks NUS and NTU immediately outside top 10, so only US/UK/Switzerland have any university above the duo.
— India Institute of Technlogy
https://en.wikipedia.org/wiki/Indian_Institutes_of_Technology#Academic_rankings shows them outside top 100 by all rankings. I wonder why. I think inernational student ratio is extremely low. I guess research output is not high.
Out of 23 locations, the top 5 have decent international rankings.