Chailey School will be given two national awards for its top results at a ceremony on May 12 in London.
It has qualified for two SSAT Educational Outcomes Awards for being in the top 10 per cent of schools for progress made between Key Stage 2 and GCSE.
The school was also in the top 20 per cent nationally for high attainment.
Chief executive of SSAT (Schools Network) Sue Williamson said: “Chailey School should be congratulated for their exceptional achievement. They have proved themselves to be leading the field in improving GCSE outcomes for their students.
“There is so much good practice that this school could share, and I hope they will join us at the celebration evening for the chance to network and share strategies with award-winning schools.”
The SSAT (Schools Network) is an education organisation working with schools to provide support and training.