Sri Lanka, Oct. 30 -- The Overseas School of Colombo (OSC) reaffirmed its position as a global leader in sustainable education, earning recognition from UNESCO's Greening Education Partnership and also by renewing its Eco-Schools Green Flag accreditation from the Foundation for Environmental Education (FEE).

In June 2025, OSC was featured by UNESCO's Greening Education partnership as one of only two schools globally recognised as an exemplar Green School, signifying that OSC meets UNESCO's rigorous Green School Quality Standards, with a whole-school approach to sustainability.

OSC is also featured in the Early Years Eco-Schools Global Handbook (p.35), which spotlights leading models of environmental education worldwide.

Another highlig...