Teachers behaving badly should prompt reflection in Hong Kong

Educators have received quite a bit of unwanted attention lately. First came a Hong Kong school principal losing his temper during a study trip in Singapore over parking a coach bus. The man was caught on camera hurling abusive language at security guards in the presence of a busload of students.
That lapse of judgment was met with a stern response. The principal eventually tendered his resignation and apologised, admitting his error and trying to use it as his last lesson to his students. The...