Ripon Grammar School Albert Saggers, 18, also achieved A* in economics, and A in maths which was just two marks off an A*.
Before he was diagnosed in January, the teenager struggled to concentrate on his studies and never managed to do any academic work outside school hours.
Sixth form staff at RGS noticed that he found it difficult to focus and encouraged him to be assessed for attention deficit hyperactivity disorder.
He was diagnosed within the week and was put on methylphenidate medication.
“It allowed me to focus and work for eight hours a day. I went from being able to do nothing to doing as much as I wanted. It gave me so much more energy. I’m very grateful it was spotted and it has made all the difference," he said.
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