St George’s School Windsor Castle is an award-winning day and boarding school for girls and boys aged 3–13, offering extensive facilities in a truly iconic setting at the foot of Windsor Castle in Berkshire.

The first standalone prep school in the UK to be designated an IB World School, St George’s prides itself on combining a pioneering, world-class, International Baccalaureate curriculum, with exciting opportunities to collaborate across the globe through Round Square, and a school-wide approach which prioritises mental wellbeing, nurturing children to be kind, resilient, inquisitive, internationally minded and 'real world ready’.

In April 2026 it was announced that St George’s School Windsor Castle will join with the St Albans Education Group (STAEG) and partner with St George’s Ascot to create a new co-educational through school.

The new through school, which is anticipated to be fully operational by September 2028, will offer a seamless educational journey from ages 3 to 18 with access to excellent facilities across two sites.