Scanorama....
No way would they allow everyone who submits an application to attend testing day.. this is for Air Traffic Control, not a checkout operator at coles (no offence to anyone). They (AsA) need to make sure that each successful applicant has the aptitude & attitude to pass college & then do the job!
Obviously only the most suitable applicants make it through stage after stage. It will be narrowed down to approx 75-100 per capital city for testing day I believe.
We had 4 days of testing in Melbs early in the year & 25 per day. 8 passed testing on my day.
Good luck again!!