Table of Contents
Key Takeaways
- Sustainability sticks when it shapes governance, learning, operations, skills and community, not just a themed week.
- GSG’s 5S model (Structure and Governance, Students and Learning, Management and Operations, Skill Development, Stakeholder Connect) turns the Whole School approach into practice.
- KPIs reviewed quarterly make progress visible: at one sample campus, policy awareness rose from about 10% to 90% in a year.
- The programme grew from 8 schools in 2021 to 20 in 2023, and led to the Green School Certification (14 campuses certified in year one).
- Common roadblocks (time, funding, teacher interest, data) have practical fixes.
A problem-first guide to teaching sustainability in schools and education for sustainable development
Every school has a recycling bin. Far fewer can show that students understand why it matters, or that the habit stuck. Across 64 campuses in 11 countries, Global Schools Group (GSG) set out to fix that gap. Here is what worked, what didn’t, and what the numbers say, so you can skip the guesswork and borrow the blueprint.
Why Is Teaching Sustainability in Schools So Hard to Get Right?
The problem is not a lack of goodwill. It is that sustainability is often treated as a themed week, not a way of running a school. UNESCO data from 100 countries found that only 53% of national curricula mention climate change at all, and fewer than 40% of surveyed teachers felt confident teaching its severity (UNESCO). In a separate UNESCO survey of 17,000 young people, 70% felt poorly prepared for climate challenges (UN Climate Change).
The cost of that gap is real: students leave school informed about the problem but unequipped to act, and teachers are left to improvise without support. As UNESCO’s Director-General put it, “There is no solution without education.”
What Does Education for Sustainable Development Actually Require?
The GJET paper reviews the main frameworks and finds a shared message: education for sustainable development (ESD) only works when it reaches beyond the syllabus.
- ESD (UNESCO): builds critical thinking and responsible citizenship through sustainability themes.
- UN Sustainable Development Goals: give schools shared, concrete targets.
- Global Citizenship Education: builds empathy and active participation. Our guide on civic education and inclusive communities explores this further.
- BREEAM and ISO 14001: focus on buildings and environmental management.
The solution that connects them is the Whole School approach, where sustainability shapes curriculum, operations, culture and community. The 2021 Berlin Declaration urges ESD for everyone and backs this approach. Research cited in the paper links ESD-active schools with stronger school improvement processes.
How Did We Turn Ideas Into the 5S Model?
Founded in 2002, the Global Schools Foundation built its “5S of Sustainability” on the Whole School approach, drawing on the Global Reporting Initiative and the UN SDGs. Each pillar solves a specific problem:
- Structure and Governance: committees, ambassadors and policies, so someone owns the work.
- Students and Learning: sustainability woven across subjects, plus student-led projects aligned with the SDGs.
- School Management and Operations: lower energy, water and waste, and a tracked carbon footprint.
- Skill Development and Innovation: training and workshops for staff and students.
- Stakeholder Connect: parents, staff and communities share responsibility.
Together, the pillars make teaching sustainability in schools a daily habit rather than an annual event.
Paper consumption and biodiversity showed notable improvement, and the group published its inaugural Sustainability Report, giving schools structure, accountability and wider visibility. GSF has also won awards for innovation, best practices and sustainability. The authors are candid that these are internal figures, and that measuring genuine mindset change needs further study.
What Roadblocks Did We Hit, and How Did We Fix Them?
Every school faces the same hurdles. Here is how ours were tackled.
Roadblock | Our response |
Limited time and funding | Using technology and our learning management system to streamline effort (see smart classrooms) |
Uneven teacher interest | Passionate teachers lead the sustainability teams |
Hard-to-compare KPIs | Baseline data first, then a prioritisation plan for benchmarking |
Mapping subjects to SDGs | PYP is already mapped; project-based learning and real-world case studies elsewhere |
Data collection load | Non-teaching staff now help gather data |
How Did the Model Grow Into Green School Certification?
A 2026 GCEE paper describes the next step, the GSG Green School Certification. Campuses are scored out of 100 across five pillars: Eco Heartware, Environmental Management, Sustainability Learning, Community Connect and Green Infrastructure. Four tiers run from Eco Initiator to Eco Champion, and certification is reassessed after two years.
The same scorecard now extends to GSG’s offices, with GIFTech the first office certified. GSG’s CEO has described the aim as serving two groups at once: campuses that use fewer resources, and students who build lasting sustainable habits.
In year one, 14 campuses were certified, and Glendale Academy India reached Eco Champion with 93% on its first attempt (GCEE paper).
What Do Students Actually Gain?
Outcomes matter more than activity counts. In GSG schools, they show up as:
- Confidence: students lead projects aligned with the SDGs.
- Ownership: campus teams include students, not just staff.
- Stage presence: students take part in sustainability competitions, including on the global stage.
- Real-world skills: critical thinking, creativity and collaboration through workshops and projects.
What Can Your School Do This Term?
- Name a sustainability lead and a student team.
- Pick three KPIs and record a baseline.
- Map one subject unit to an SDG.
- Launch a student project using innovative teaching methods.
- Share results with parents.
Avoid the trap of collecting certificates without changing daily habits.
Which GSG Campuses Are Already Doing This?
Campus | Country | Highlight |
Glendale Academy India | India | 93%, Eco Champion tier |
One World International School, Sarjapur | India | Campus leaders contributed to the certification study |
GIIS Tokyo | Japan | Campus leaders contributed to the certification study |
Witty International School | India | Campus leaders contributed to the certification study |
Regent International School | Malaysia | Campus leaders contributed to the certification study |
Conclusion
Sustainability in education is about more than teaching students to care for the planet. It is about helping them turn that understanding into everyday action, from making responsible choices to solving problems and contributing to their communities.
GSG brings this whole-school approach to life through its 5S framework: Structure and Governance, Students and Learning, School Management and Operations, Skill Development, and Stakeholder Connect.
As explored in the GSF Schools Model for sustainability in K–12 education, measurable goals and continuous evaluation help schools track progress and improve their impact. Across a network of 64 campuses in 11 countries, GSG combines international perspectives with a commitment to meaningful learning. Discover its educational approach, explore its curricula and find a campus near you.
Enquire Now to learn more about a GSG school for your child.
Frequently Asked Questions
What is education for sustainable development in schools?
Education for sustainable development helps students understand environmental, social and economic challenges and make informed decisions. It connects learning with real-world action across subjects, school operations and community initiatives. Explore GSG’s approach to education to see how learning can extend beyond the classroom.
How can schools start teaching sustainability?
Schools can begin by setting clear goals, involving teachers and students, and connecting sustainability to existing lessons and daily routines. GSG’s 5S framework offers a whole-school structure for this work. Read what it means to be a global school to learn more about shared standards across countries.
Does GSG's approach hold up across different curricula?
GSG schools offer different curricula, allowing students to pursue educational pathways suited to their campus and learning needs. Sustainability can be integrated into teaching, school practices and community engagement across these settings. Explore the curriculum page to understand the programmes available.
Which GSG campuses offer the most advanced technology?
Technology and facilities vary by campus. OWIS campuses in India offer learning environments that include digital classrooms, science and computer laboratories, and spaces for activities such as robotics and coding. Visit all GSG locations to explore campuses and enquire about their facilities.
What recognition has GSG received?
GSG has received recognition for areas including innovation, best practices and sustainability. Awards and accolades can offer insight into the organisation’s work, but families should also consider each school’s curriculum, learning environment and individual needs. Explore the GSG awards and accolades page for details.
Author Bio
Smita Warnekar, Rathin Khandhadia, Vikram Balakrishnan and Sweety Gathani of the Global Centre for Education Excellence, Global Schools Group, Singapore, explore how sustainability can become an integral part of K–12 education.
Their paper, Integrating Sustainability in K–12 Schools: The GSF Schools Model, presents the 5S of Sustainability framework, connecting school governance, student learning, campus operations, skills development and stakeholder engagement. It examines how curriculum integration, student-led initiatives, resource management and community partnerships can foster environmental awareness and social responsibility.
The study also highlights measurable performance indicators and regular monitoring as tools for tracking progress and refining sustainability practices across schools.
