Do we need lockdown drills in Victorian schools?

Two schools in Berwick went into lockdown yesterday, a Department of Education spokesperson said the incident involved a "young student who behaved in a dangerous matter".In this edition of The Conversation Hour we discuss whether lockdown drills are necessary in Victorian schools and how to do them without perpetuating a sense of fear and anxiety in young people.Also in this edition, why this year's cherry season has been delayed, why uniforms matter in attracting women into trade plus is Robert Irwin the perfect male role model?