The term dates for all Queensland state schools are published on the Department of Education website.
https://education.qld.gov.au/about-us/calendar/term-dates External link
Bullyard State School observes the Royal Queensland Show Public Holiday for Bundaberg Region—within the postcode of 4671. The exact date can be found at the below link.
https://www.qld.gov.au/recreation/travel/holidays/show
Please note that schools closer to Bundaberg in the 4670 Postcode observe a different show holiday date.