His victim was so traumatised that she took a mixture of stress pills and painkillers in January before writing a note telling her family that she did not want a 'sad funeral.'
The boy went to the same Lincolnshire school but cannot be identified. He targeted the hapless girl, calling her a host of sickening racist names.
Among his favourite chants was - 'White, white, white is right, kick them out, fight, fight, fight,' taken from a film about football hooliganism.
On one occasion the bully also told the girl: 'Go back to your own country, you don't belong here.'
Raymond Wildsmith, prosecuting, told Lincoln Magistrates Court the insults happened 'again and again and again' - anything up to four times a week.
The girl was subjected to six months of the racist abuse, but only revealed her torment after she tried to kill herself.
Mr Wildsmith said - 'She was reluctant to report it to the school authorities for fear of marking it worse.'
Giving evidence by video link, the girl told a police officer the abuse made her 'want to die.' 'I wanted to die because of everything that was happening at school,' she said.
Now she and her family have moved away from the Lincoln area.
Her 15-year-old racist tormentor, who denied the charge, was convicted of racially aggravated harassment following a six-hour trial.
He will be sentenced on August 13.
His solicitor Sunil Khanna said 'He has no previous convictions recorded against him. He has now moved school and settled in well.'
A second 15-year -old was cleared of the same charge, Daily Mail reported.
The Crown Prosecution Service confirmed it was the first successful prosecution of a schoolchild for racial abuse in the UK.
Jaswant Narwal, Chief Crown Prosecutor for Lincolnshire said: 'We would like to thank the victim for her courage in coming forward and strongly encourage other young people in the same situation to report to the police when they have been targets of campaign of racial bullying.'