Ofsted will not have told the school what they should do; the response to the Ofsted judgement is up to the school. The Ofsted inspection was in 2010.
This is what the school has said (quote from DM).
"Explaining the motivation for the trip, Payhembury headteacher Penny Hammett told parents in a letter: ‘The purpose of this trip is to build up a relationship with a school in a very different community to ours.
'This will enable our children to gain a better understanding of multicultural Britain, which was identified in our last Ofsted as being an area for development.
‘Through our topics, visitors and discussions we have been developing multicultural awareness in both Britain and throughout the world, but this visit will help us to experience in real life a school where there is a wide mix of children with different ethnic backgrounds and almost 50 per cent of the children do not have English as their first language.’
The letter also explains that four teachers will accompany the children on the two-day trip, which will involve pupils sleeping in the Isleworth school and using its catering facilities, for an estimated cost of £35.
While in London, the Devon children will engage in outdoor activities and record a CD."