[7] Significant extracurricular activities participated in by Wellington International School include Model United Nations, the Duke of Edinburgh's Award,[8] and charity work.

In 2024, the school produced a charity single, a cover of The Climb by American singer Miley Cyrus, which debuted at the top of UAE download and UK soundtrack charts on iTunes within hours of being released.

[11] In 2023, students at the school started a non-profit organisation to aid migrant workers in the country.

[12] The school has regularly participated in local Model United Nations events.

GEMS Wellington International has received an Outstanding rating since the 2009-2010 school year.