I actually went to school in Sydney, from Grades 5-8 (actually Classes 5-6 in co-ed public school and Forms 1-2 in a well-regarded English-style all boys private school). There was no corporal punishment in the public school as far as I know, but in the private school the canes came out frequently. I got caned on the backside for missing articles of gym clothing on gym day, and for talking in assembly. Class canings weren't as common, but you heard some teachers did them, and did them hard. 

I dunno, it didn't kill me, and I made damn sure I had all my gym gear with me. I can imagine it must be hard keeping 600-800 teenage boys in line.  But I'd like to see actual research regarding long-term effects on kids. Are we more quick to violence by having it administered in our early teens? Looking at my own impulses (but not actions), it's not inconceivable.