The parents of a psychologically disturbed pupil who leapt to his death after being punished by his teachers vowed to sue the school for neglecting his special needs and triggering his suicidal tendencies. The development came after a coroner's jury ruled yesterday that 17-year-old Wong Ling-fung committed suicide by jumping from a Tung Chung Catholic School building on May 24 last year. The five-member jury, in a unanimous ruling after two hours of deliberation, urged the Hong Kong government to review its policies on integrating mentally ill pupils into mainstream schools. They said Hong Kong schools needed more resources to help them deal with pupils with special needs. Seventeen days before Wong committed suicide, he was punished for using a public broadcast system at the school to criticise teacher Chan Sau-fong during an event aimed at showing respect for teachers. He was then confined in a small room near the school's general office for several days and given a demerit. School principal Lau Chong-yuen insisted at the inquest that all measures taken were aimed at protecting Wong from the repercussions of criticising the teacher. Those testifying during the four-day inquest, including the school's social worker and his teachers, said Wong, an immigrant who moved to Hong Kong in 1999, showed abnormal behaviour months before the suicide, including stalking a teacher and mixing his blood and chocolate. Wong, a Form Four pupil at the time of the incident, had suffered from psychosis since 2008 and was sent to the psychiatric Kwai Chung Hospital for nearly two months before being discharged in January 2009. Months before his death, doctors said he was slowly recovering. His parents, security guard Wong Yeung-chiu and housewife Yip Wai-kuen, said the Lantau school was responsible for their son's death. 'Locking him inside a room is just the same as imprisonment. He was forced to end his life because of his teachers,' Wong Yeung-chiu said. 'They need to compensate for my son's life. I will keep suing. 'His mother always told his younger brother he was not doing as well as his older brother. She misses him a lot,' said the tearful father outside Eastern Court. The school had told the court that staff followed guidelines issued by the Education Bureau with regards to handling pupils with emotional problems. But the court also heard that a teacher who had been dealing with Wong's behavioural issues had not seen any guidelines. The jury recommended that the government give more resources to schools to better equip them to deal with mentally ill pupils. It also suggested the bureau review its current policies on integrating mentally ill pupils into mainstream schools. An Education Bureau spokeswoman said schools did have the necessary support to deal with pupils like Wong. Albert Ho Chun-yan, who represented Wong's family at the inquest, said he would raise the case with the Legislative Council and Equal Opportunities Commission. May Lam, vice-chairwoman of the Hong Kong Early Psychosis Intervention Society, said punishing a pupil with psychological problems could simply add to the pressure on them. 'You have to determine whether their behaviour arises from an illness,' she said. 'If it is because of the illness, you cannot punish them. Just like a fever, you cannot scold someone because they have a fever.' Lam said schools should communicate more with experts on pupils with special needs. Wong went back to school after he was discharged from hospital in January 2009. In March last year his medication dosage was lowered. Doctors who testified said he had been reluctant to take the drugs at all and lowering the dosage was intended to make him more comfortable.