Patrick Basset is the president of the National Association of Independent Schools. He kicked off his talk by playing this Youtube clip. Awesome Answer Machine Message From Maroochydore High School In Queensland, Australia. (Wikipedia entry) I thought it sounded familiar, and indeed an earlier version circulated as an email, according to Snopes.
Even though it's a hoax, it's so popular because it captures the frustrations many teachers and school officials feel from "my child is a special snowflake" parents -- you know, the turbo-jet attack helicopter kind.