Should schools start later for teenagers?

Many teenagers wake before dawn for school, then stay up late with coaching and homework.

The case for

• Teenagers' body clocks naturally shift later.

• More sleep means better concentration, mood and health.

The case against

• It disrupts parents' work schedules and school transport.

• It clashes with coaching classes and after-school activities.

Where do you stand? Vote, then share your opinion - and say what would change your mind.