University sustainability rankings: measuring environmental and social responsibility

The emergence of sustainability in higher education rankings

Sustainability has rapidly moved from a peripheral concern to a central dimension of university evaluation. Students increasingly consider environmental and social responsibility when choosing where to study, employers value sustainability credentials, and governments link funding to climate and social impact goals. This shift has been reflected in the creation of dedicated sustainability rankings. The Times Higher Education Impact Rankings, launched in 2019, the QS World University Rankings: Sustainability, introduced in 2022, and the UI GreenMetric World University Rankings, established in 2010, represent the three most prominent frameworks for measuring university sustainability performance.

These rankings differ fundamentally from traditional research and teaching rankings. Rather than assessing academic prestige or research output, they evaluate how universities address environmental, social, and governance challenges through their operations, teaching, research, and community engagement. The wide scope and relative novelty of sustainability measurement mean that methodologies are still evolving rapidly, and users should expect significant changes in indicators and coverage in the coming years.

THE Impact Rankings and the SDG framework

The THE Impact Rankings are structured around the United Nations Sustainable Development Goals, a set of seventeen global objectives adopted in 2015. Universities submit data against as many SDGs as they choose, and their overall rank is determined by performance on SDG 17, Partnerships for the Goals, which is mandatory, plus their best scores on three other SDGs. This design allows institutions to highlight the sustainability areas where they have the greatest impact, rather than imposing a single standard across all areas.

The indicators within each SDG are broad: for SDG 4, Quality Education, they include measures of lifelong learning access, first-generation student support, and public educational resources. For SDG 13, Climate Action, they cover carbon emissions, climate education, and commitment to carbon neutrality. Data is primarily self-reported by institutions, with supporting evidence required for verification. This self-reporting model allows wide participation—the Impact Rankings have grown rapidly in institutional coverage—but raises questions about data consistency and verification across the large and diverse pool of participating institutions.

QS Sustainability Rankings and UI GreenMetric

The QS Sustainability Rankings organize their assessment around three pillars: Environmental Sustainability, Social Sustainability, and Governance. The environmental pillar includes indicators for sustainable institutions, sustainable education, and sustainable research. The social pillar covers equality, knowledge exchange, educational impact, and employability and outcomes. The governance pillar addresses ethical governance, financial transparency, and stakeholder engagement. QS draws on a combination of institutional data, bibliometric analysis, and reputation surveys.

UI GreenMetric, developed by Universitas Indonesia, focuses specifically on campus environmental management and has the longest track record among sustainability rankings. Its indicators cover setting and infrastructure, energy and climate change, waste management, water usage, transportation, and education and research related to sustainability. Unlike THE and QS, GreenMetric captures operational data about campus facilities, energy consumption, and recycling rates, making it a more narrowly environmental assessment rather than a broad sustainability evaluation. Each of these three systems answers a different question: THE Impact Rankings ask how a university contributes to the global SDG agenda, QS Sustainability asks how a university performs across a broad ESG framework, and GreenMetric asks how green the campus itself is.

Challenges and practical guidance

Sustainability rankings face significant methodological challenges that users should understand. Data availability and comparability remain major issues, as environmental reporting standards differ across countries and many institutions are still developing sustainability measurement capacity. Self-reported data creates risks of selective reporting and inconsistent interpretation. The scope of sustainability is contested: should rankings include social equity, labor practices, and governance, or focus narrowly on environmental impact? Different ranking systems answer this differently, and no single system captures the full spectrum of sustainability concerns.

For universities considering participation, sustainability rankings offer an opportunity to benchmark progress and communicate values to stakeholders, but they also require substantial investment in data collection and reporting infrastructure. For students and other users, sustainability rankings can help identify institutions that align with personal values, but they should be used alongside other evidence. Verify whether the sustainability claims in the ranking are supported by concrete policies and publicly available data. Check the institution's own sustainability reports, look for third-party audits, and consider whether sustainability performance in the ranking is matched by integration of sustainability into the curriculum and research programs. As with all rankings, sustainability metrics are most useful when understood in context rather than reduced to a single position on a list.