From 13 April 2015, under the Tobacco Act 1987 smoking is prohibited within the grounds of, and within four metres of an entrance to, all Victorian childcare centres, kindergartens, preschools and schools.
The smoking ban applies at primary and secondary schools at all times, no matter whether the building or school grounds are being used for education purposes or other purposes. The ban therefore applies when other activities are taking place on the school grounds, such as fetes or sporting events, as well as during school hours.
For more information please see: http://www.health.vic.gov.au/tobaccoreforms/