Awww, I used to love saturday school sport. Except sometimes in yr12 because I'd have to get up on a saturday morning and I'd be all tired and have migraines and yerr not fun.
We only had to do PE from yrs7-10 though, not in VCE at all. But yeah, two periods a week + sports trainings each week + school sport on saturday. Training was once a week in the summer for cricket (I was captain of the 5th XI, lol. Out of 5 teams) and twice a week in the winter for cross country (which I actually cared about, because my school wins at cross country).
It did take up a fair bit of time, but I enjoyed the balance between sport and academia - even now at uni I've still found time to play 6 different sports this year for my college.