One in 12 Hong Kong secondary school students is socially disengaged on campus, according to a survey by a social welfare organisation, which is calling for early identification and better support for these “invisible students” before they drop out. The Hong Kong Christian Service (HKCS) surveyed 1,958 Form One to Form Five students aged between 11 and 19 in February and March to identify those with “dropout tendencies” at an early stage. The study found that 8.4 per cent of respondents, or 165.