Building work has finished on the extension of Heathfield Nursey, Infant School and Junior School, ready for September.
The work is part of Richmond Council's 10-year schools expansion plan and will provide an additional 210 places.
It included the demolition of several post-war buildings and extending the schools' shared main building.
Council cabinet member for schools Councillor Paul Hodgins said: "Even with incredibly high demand for our local schools, the borough’s track record for placing primary school children at schools in Richmond is excellent.
"The council’s primary school expansion strategy will help improve the borough’s impressive figures further.
"School expansion is going from strength-to-strength and I am delighted at how the work has gone at Heathfield Nursery and Infant and Heathfield Junior Schools."