ARK Oval Primary has been rated "good" in its first Ofsted report.
Inspectors who visited the East Croydon academy in December praised staff for their quality of teaching and for encouraging pupils to strive for excellence.
Their report praised the attitude of children, saying: "Pupils behave well in lessons and move around the school in a calm and orderly fashion. They are respectful to adults and each other. Pupils are proud of their new school. They enjoy their lessons and attend regularly."
They did, however, say some improvements in subjects such as maths had not yet been fully achieved.
Head teacher Sonia Rutherford said: "I'm very pleased that Ofsted recognises the progress we've made so far and the achievements of our staff and pupils. We are determined to continue to build on our achievements so that we can ensure that every child at Ark Oval achieves at the highest level possible and can make a really successful transition to secondary school."
The current school reopened as an academy on the site of the former failing Oval Primary School in September 2011.