Should secondary schools start later in the morning?
Hong Kong teenagers are among the most sleep-deprived in the region, yet most schools still ring the first bell before eight. A later start would not spoil discipline; it would align the timetable with adolescent biology and make the first lesson worth teaching. Sleep researchers have shown that teenagers’ body clocks shift later in adolescence. Asking a sixteen-year-old in Tuen Mun, who has already spent fifty minutes on a bus, to analyse a poem at 7:40 a.m. is asking the brain to sprint before it has woken. Schools that delayed the first lesson by even thirty minutes reported fewer late arrivals and more students able to answer a question in the first period, not chaos in the corridors. Alertness is not a moral quality. It is a condition. Critics worry that after-school activities, tutorial slots and parents’ office hours would be squeezed. The calendar can move as a whole. Clubs can begin and end half an hour later; families who rely on older siblings for pickup can be given a term’s notice. A few sports teams that book public venues at fixed times would need to renegotiate. That is administration. It is not an argument for keeping a timetable that fights the body. There is a cheaper objection: “students will just sleep later and stay online until three.” Some will. Policy should not be designed only for the most self-controlled, but neither should it be abandoned because a minority will waste the gift. A later bell plus a clear homework cutoff — no new assignments after 8 p.m. — is more honest than a 7:35 start and a lecture on grit. Starting later is not a luxury imported from wealthy districts. It is a timetable that treats sleep as part of education, not as an obstacle to it. If we can adjust exam dates for typhoons, we can adjust a bell for biology.