Mark Parker, 18, was rejected by Oxford after he was interviewed in December. He had applied to study maths.
The university's decision to reject Mr Parker - who has so far scored 100 per cent in five out of 10 maths modules and in one of his Harvard assessment tests - will reignite the row over how universities choose students.
Only 53 percent of students admitted to Oxford are from the state sector.
In 2000, the institution's decision not to accept state school pupil Laura Spence provoked a storm of criticism.
Like Mr Parker, Miss Spence also travelled to Harvard on a scholarship to study biochemistry, completing her studies in 2004. David Clough, deputy headmaster of Mr Parker's school, Ermysted's, in Skipton, North Yorks, said: "We kept stating Mark was an exceptional pupil. We had a pupil last year who gained 100 per cent in 14 out of their 15 A-level modules but Oxford turned them away too Continuous Reading...
