Does anybody know good highschool writing competitions?

Sorry, I'm not really sure if this is the right place to post this, but I thought I'd give it a go.

For context, I'm a writer in YR 9, Australia. I'm looking for any competitions for people my age, whether they be national or global - I've been recognised in one national comp, which is a good start, but I'd like to expand my writing accomplishments. Preferably, the competitions would be fairly well respected and have some level of prestige.

Please let me know if there are any competitions you have won or entered, Australian or global! Preferably short story competitions between 500-2000 words, however I am open to essays, novellas, etc. Depending on the circumstances. Thanks!