The Combined High School Championships are an annual event for public high school students held in Gosford at the end of the Term 3 each year. Students compete on behalf of their school and region against other students of the same age from across NSW.
There are four different competitive disciplines on offer at the championships. Athletes have the option of competing in Individual Trampoline, Single Mini, Double Mini and Short Track Tumbling, all running under modified competition rules.
Robert Bull, Head Trampoline Coach at Miranda RSL Youth Club, has held the position of Sydney East Regional Trampoline Co-ordinator for over 20 years. Due to this, the Sydney East regional trial is held at the Youth Club at the start of Term 3 each year.
The 2020 CHS Trampolining competition has been cancelled due to the COVID-19 pandemic.