As the world gets smaller, students at Janesville’s Rock University High School expand their understanding of global affairs. District spokesman Patrick Gasper says an open house planned at the charter school has a dual purpose. Gasper says the students will have a chance to show off their projects, and administrators will be able to share what the school has to offer before open enrollment begins next month. The open house is set for 6:30 p.m. t0 7:30 p.m. Thursday on the Blackhawk Technical College campus.