2025 QS World University Rankings: Mapping the Shifts and Metrics Behind HKU, CUHK, HKUST, CityU, and PolyU

Following the release of the QS World University Rankings 2025, all five publicly funded universities in Hong Kong moved up the table together. The University of Hong Kong (HKU) climbed to 17th, the Chinese University of Hong Kong (CUHK) to 36th, the Hong Kong University of Science and Technology (HKUST) to 47th, the Hong Kong Polytechnic University (PolyU) to 57th, and City University of Hong Kong (CityU) to 62nd. Measured against their 2024 positions, the five institutions recorded an average improvement of 9.8 places. HKUST’s 13-place jump is the largest single-year recovery since the 2023 indicator reform. Using QS official indicator scores as the backbone, this article unpacks year‑on‑year data across five dimensions — academic reputation, employer reputation, faculty/student ratio, citations per faculty and international faculty ratio — and draws on the University Grants Committee (UGC) research assessment and Immigration Department student visa statistics to examine the logic behind the movements.

Overall ranks and a five-year movement reference

The QS 2025 ranking retains the 2024 nine‑indicator structure, with the following weightings: academic reputation 30%, employer reputation 15%, faculty/student ratio 10%, citations per faculty 20%, international faculty ratio 5%, international student ratio 5%, international research network 5%, employment outcomes 5% and sustainability 5%. Under this structure, Hong Kong institutions broadly benefited from the recalibration of research output and international network indicators.

The table below lists the 2024 and 2025 QS ranks together with the change in positions:

Source: QS Quacquarelli Symonds, 2024 & 2025 World University Rankings.

If the 2023 edition rankings are taken as a reference under the previous indicator set (academic reputation 40%, employer reputation 10%, faculty/student ratio 20%, citations per faculty 20%, international faculty 5%, international students 5%), the positions were: HKU 21st, CUHK 38th, HKUST 40th, PolyU 65th and CityU 54th. When the indicator framework was restructured in 2024, the five institutions diverged, with HKUST, PolyU and CityU undergoing noticeable corrections. The 2025 results show a convergence towards their historical central range. Immigration Department statistics show that 62,079 visas for mainland and overseas students to study in Hong Kong were approved in 2023, a 41% increase from 2020, providing demand‑side support for the international student ratio indicator.

A breakdown of five core indicator scores

The five indicator scores published by QS are set on a 0–100 scale, reflecting each institution’s relative position in that dimension. The 2025 scores for the five universities are compared with their 2024 values below:

Academic Reputation

• HKU: 99.7 (2024: 99.4)
• CUHK: 94.1 (93.3)
• HKUST: 93.2 (91.8)
• PolyU: 87.6 (86.1)
• CityU: 73.2 (72.3)

HKU and CUHK maintained steady growth in this metric. CityU improved its score but still ranked lowest among the five. The indicator is based on a global survey of scholars, where breadth of disciplinary coverage and historical accumulation carry substantial weight.

Employer Reputation

• HKU: 98.4 (97.6)
• CUHK: 89.1 (87.2)
• HKUST: 92.7 (89.3)
• PolyU: 82.4 (80.5)
• CityU: 76.5 (74.6)

HKUST’s employer reputation rose by 3.4 points, the largest single‑year gain among the five. Although PolyU and CityU started from a lower base, their applied discipline profiles have produced a clear upward trend.

Faculty/Student Ratio

• HKU: 83.2 (82.7)
• CUHK: 68.9 (67.5)
• HKUST: 72.1 (70.4)
• PolyU: 72.6 (71.8)
• CityU: 91.8 (90.9)

CityU, supported by improvements in student numbers and the allocation of teaching and research staff, continued to lead on faculty/student ratio. HKUST and PolyU, constrained by large engineering student cohorts, saw only slow gains.

Citations per Faculty

• HKU: 82.1 (80.3)
• CUHK: 86.5 (83.9)
• HKUST: 89.9 (86.7)
• PolyU: 88.3 (85.2)
• CityU: 92.7 (89.5)

CityU led the group in citations per faculty, and its 3.2‑point increase from 2024 became the primary engine lifting its overall rank. According to QS methodology, the five‑year citation window and field normalisation allow institutions with strengths in engineering and materials science to stand out more clearly.

International Faculty Ratio

• HKU: 99.9 (99.9)
• CUHK: 90.2 (89.8)
• HKUST: 99.3 (99.1)
• PolyU: 86.7 (85.4)
• CityU: 99.2 (97.8)

HKU, HKUST and CityU were all close to the maximum score on this measure, a result directly linked to recruitment policies and international joint appointments. UGC data for the 2023/24 academic year show that the proportion of non‑local academic staff across the five universities had reached 48.7%, with CityU and HKUST both exceeding 55%.

Employer reputation over three years: HKU and HKUST

The weight of employer reputation was raised from 10% in the 2023 edition to 15% in the 2024 and 2025 editions, making it a highly elastic driver of rank changes. Taking 2023, 2024 and 2025 as the time horizon, the score trajectories for HKU and HKUST are as follows:

• HKU: 94.2 → 97.6 → 98.4
• HKUST: 84.6 → 89.3 → 92.7

Even in the highest score band, HKU sustained an average annual increase of about 2.1 points, indicating a pronounced cross‑cycle accumulation effect for its employer brand. HKUST, meanwhile, improved by a cumulative 8.1 points over the three years, with the 2023–2024 period accounting for the largest jump of 4.7 points. That window coincided with QS’s introduction of the employment outcomes indicator (5% weight), which indirectly expanded the enterprise survey sample. Feedback from industry on HKUST’s engineering and business graduates mapped positively onto its employer reputation score.

HKU’s employer reputation curve flattened in 2024, and together with its relatively robust academic reputation and international research network scores in 2025, it underpinned the university’s continued rise in the composite ranking. After falling to 60th in the 2024 table, HKUST rebounded to 47th in 2025 on the back of improvements in both employer reputation and citations per faculty, the latter contributing an approximate 17% structural weight increase in its score breakdown.

Anatomy of CityU’s rise

City University of Hong Kong rose to 62nd in the QS 2025 ranking, an 8‑place improvement from 70th in 2024. Among the five traditional indicators, its citations per faculty score moved from 89.5 to 92.7, and its international faculty ratio climbed from 97.8 to 99.2, reinforcing its research impact and international profile respectively. In terms of the magnitude of single‑indicator jumps, however, the key increment came from CityU’s performance on the sustainability indicator.

QS incorporated sustainability from 2024. CityU’s baseline score in that edition was around 58.4; in 2025 it jumped to 72.3, a net gain of 13.9 points — the most marked change among the five institutions. The indicator assesses an institution’s policy transparency, carbon emissions, equal opportunities and research output in the environmental, social and governance (ESG) domain. In 2023, CityU released its Carbon Neutrality Roadmap, completed the third phase of its campus solar photovoltaic installation that same year, and in 2024 achieved a 62% coverage rate under the UGC’s Green Laboratory Certification — measures that directly entered the QS data‑collection cycle.

With a weight of 5%, the sustainability gain helped CityU offset the base‑line disadvantages in academic and employer reputation, and together with high scores on citations per faculty and international faculty, levered its position up. In addition, in the UGC Research Assessment Exercise 2024, the proportion of CityU’s research in engineering and creative media units rated as “world‑leading” rose to 37%, indirectly supporting the transmission of research‑impact perceptions into the QS rankings.

Data cross‑validation: consistency between local institutional statistics and global rankings

QS rankings are essentially cross‑sectional comparisons, yet several structural variables for Hong Kong institutions can be cross‑referenced with administrative data from the Education Bureau (EDB), the Hong Kong Examinations and Assessment Authority (HKEAA) and the Immigration Department.

The number of candidates sitting the Hong Kong Diploma of Secondary Education (DSE) examination in 2025 was 50,803, a 3.8% increase from 2024. After school‑based assessment adjustments, the proportion meeting the minimum university entrance requirement edged up to 42.1%, providing a stable demand base for the local student pool. At the same time, the Immigration Department approved over 18,000 non‑local student visa applications in the first quarter of 2025, extending the trend of annual double‑digit growth and directly supporting the steady rise in each university’s international student ratio score. HKU, CUHK and HKUST all scored above 97 on that indicator.

Under its 2022–25 triennium planning, the University Grants Committee (UGC) allocated a total of HKD 63.2 billion to the five universities, with the research‑purpose share rising to 39%. This funding structure drove an increase in publication output: between 2019 and 2023, co‑authored papers by the five institutions in SCI/SSCI journals grew 22%, concentrated in engineering, computer science and medicine, a trend that coincides with the year‑on‑year movement in QS citations per faculty scores.

The UGC Research Assessment Exercise 2024 further showed that the proportion of research outputs across the five universities rated as “four‑star” (world‑leading) and “three‑star” (internationally excellent) reached 63%, nine percentage points higher than in the 2020 exercise. CityU and HKUST recorded the largest increases in the four‑star proportion — 12 and 11 percentage points respectively — which correspond in time‑window terms with the rises in QS citations per faculty and employer reputation.

A framework for understanding the rank changes

Synthesising the score movements across the five traditional indicators and the newer ones, three main threads emerge:

1. Research output and international network indicators carried the gains. The combined weight of citations per faculty, international research network and international faculty ratio is 30%. The average score of the five institutions on this composite rose from 84.3 in 2024 to 87.1 in 2025. CityU’s citations per faculty of 92.7 contributed the most, while HKUST topped the group on the international research network indicator with a score of 91.4, directly supporting its rank jump.

2. Synergy between employer reputation and employment outcomes. Together, employer reputation (15%) and employment outcomes (5%) account for 20%. The group’s combined score in these two dimensions rose by 5.3%. HKU’s high absolute score (98.4) and HKUST’s marginal growth rate (+3.4 points) represent different pathways, but both translated into ranking gains. The employment outcomes indicator is a composite of graduate employment rates and an alumni impact index. HKUST’s 2023 graduate employment survey reported a full‑time employment rate rebounding to 93.2%, an increase of 4.1 percentage points from 2022.

3. Structural tension between academic reputation and faculty/student ratio. Academic reputation still commands the largest share at 30%. Its scores among the five showed little change and remain a slow‑moving variable. The faculty/student ratio, with a 10% weight, sits in the mid‑to‑high range for all five institutions and exerts far less influence on rankings than the research‑oriented indicators. CUHK’s faculty/student ratio of 68.9 was the lowest of the five, yet its academic reputation of 94.1 and citations per faculty of 86.5 closed the gap, lifting it to 36th overall. This suggests that as the weighting structure tilts towards the research end, the explanatory power of traditional teaching‑resource indicators has diminished.

FAQ

1. Why did Hong Kong universities generally rebound in the QS 2025 rankings?
The main reasons were rises in research impact indicators (citations per faculty, international research network) and employer reputation scores, combined with a base‑effect correction following the calibration of the new indicators introduced in 2024. The five institutions experienced a technical downgrade in 2024 and in 2025 returned to rank intervals that more closely matched their research output and employer assessments.

2. Which university recorded the largest rise?
The Hong Kong University of Science and Technology (HKUST) rose 13 places, from 60th to 47th, driven primarily by gains in employer reputation and citations per faculty.

3. How is the employer reputation score derived?
Employer reputation is based on a global employer survey in which corporate recruitment managers and senior executives assess the work performance and adaptability of graduates. The 2025 edition collected more than 99,000 valid responses, with regional quotas and industry weights applied to reduce bias.

4. Why is CityU able to approach a perfect score on international faculty ratio?
CityU has long maintained a high proportion of non‑local academic staff. UGC statistics for the 2023/24 academic year placed the figure at 56.4%. Its global recruitment mechanisms and international collaboration platforms, including the Shenzhen Research Institute and multiple joint laboratories, facilitate cross‑border mobility of personnel. Both national diversity and the proportion of foreign‑national staff captured by QS place CityU in the top scoring band.

5. How useful are these ranking figures for students staying in Hong Kong after graduation?
Rank position and employer reputation affect the pass‑through rate in the initial screening round when graduates seek employment in Hong Kong, especially in multinational corporations, finance and technology sectors. Citation intensity is also linked with access to research postgraduate programmes and UGC‑funded research opportunities.

6. Does a low faculty/student ratio score necessarily harm the study experience?
The faculty/student ratio score reflects macro‑level resource allocation. At the undergraduate level, the effect of class size can be moderated through course selection strategies. Although CUHK’s ratio is the lowest among the five, the collegiate tutorial system ensures that individual guidance time remains stable; teaching satisfaction survey results have not shown a corresponding decline.