The document describes a student blogging challenge created by Sue Wyatt to teach students about blogging and building an international professional learning network. The challenge involves students starting their own blogs and commenting on class blog posts. Over the years, participation in the challenge has grown from 10,000 students in 26 countries to almost 18,000 students in 74 countries. The challenge consists of weekly activities over 10 weeks to teach students blogging skills and connect them with an international audience.