Pupils in Harrow have been delighted with their SAT scores.
Results received so far show national standards for 11-year-olds have increased in English, Maths and Science.
At Cannon Lane Middle School, in Cannonbury Avenue, 99 per cent of pupils scored Level 4 and above in English and 97 per cent in Science in their key stage two results.
Headteacher, Richard Johnson said: "I am absolutely delighted with this year's exceptional results, showing the hard work that teachers, parents and pupils have put in over the past year."
Problems with the marking system have meant pupils across the UK are still awaiting their results. However most key stage two results can be accessed online and key stage three results are due next week.
Councillor Anjana Patel, portfolio holder for Schools and Children's Development, said: "Congratulations to all those pupils receiving exceptional grades this year.
"Although we haven't yet received the marks from all schools in Harrow, the first indication shows outstanding results, increasing from last year."