Star pupil Unnat Krishna said today he was "utterly amazed" after achieving 16 A* GCSEs.
The 16-year-old beamed as he opened his results at King Edward VI Five Ways School in Bartley Green, Birmingham.
Unnat, from Wordsley, Stourbridge, West Midlands, will now take his A-levels and hopes to study medicine at university.
"I cannot quite describe how I feel," he said. "I am really shocked and surprised.
"I thought I would get about 10 or 11 A*s but I never expected 16. "I did work hard - I am utterly amazed."
Unnat took 14 GCSEs and an AS Level, which is the equivalent of two GCSEs. His results are believed to be a school record.
Today proved to be an expensive day for his parents, who had promised him a PlayStation game for every A* he gained.
"We've got 16 games to buy now," said his mother, Dr Anjana Sinha. "I'm so proud of him - it's overwhelming. He is very hard-working and has always been bright."
Unnat's father, Dr Kanhaiya Krishna, said: "We are so proud. I knew from the beginning that he would get 13 plus A*s but I did not expect him to get 16. It's a big surprise."
Unnat's 21-year-old brother Akshat added: "I could not expect anything less from him to be honest. I don't think I have ever come across a better student."
Other students at the selective grammar school also scored top marks, with 12 achieving A* grades in at least 10 subjects.
All 157 GSCE students gained five or more A* to C grades and 75% achieved an A or A* in at least 10 of their subjects.
Tim Thomas, 16, battled dyslexia to gain 11 A* grades and hopes to become a top graphic designer.
He said: "I am quite happy. I'm going to stay here and study A-levels."