Hagbourne and All Saints, Didcot, took the honours as St Birinus School, Didcot, hosted their first international sports day for their feeder primary schools.
Held over two days, the event involved the modern foreign languages department delivering cultural sessions on six countries in the morning.
Then the youngsters took part in sporting tournaments associated with each country - tag rugby (Australia/New Zealand), cricket (Sri Lanka/West Indies), athletics (Greece) and football (Spain).
Almost 150 students attended each day with Chilton, Harwell, Hagbourne, South Moreton and Willowcroft battling it out in Tuesday's event.
Two days later it was the turn of All Saints, Ladygrove Park, Long Wittenham, Blewbury Endowed CE, Manor and Stephen Freeman.
Foryt-five students from St Birinus, who are taking the level 1 Sports Leadership qualification, helped run the event.
Northbourne and Manor claimed the fair play trophies.
The event was sponsored by Didcot Sports, UKAEA and supported by London Wasps RFC, who bought along the Heineken Cup.
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