I started school in 1942 when I was only 4 and left 11 years later. Most of us finished at age 15 in those days.
Teachers came armed with bamboo canes which they wielded enthusiastically, mostly across the hands. "Six of the best" was the top punishment and if they only gave you one hit they weren't very serious about it and you counted yourself lucky.
The curriculum was based on the "three Rs" (reading, writing and 'rithmetic) and, believe it or not, we actually finished our schooling with a reasonable amount of knowledge.
There was lots of homework and lots of rote learning, Not perfect, of course, but effective.
My favourite teacher: Miss Pretty. Well, Miss Lawson, actually, who was my teacher when I was 7. I think she was my first romance but, alas, I never told her. I hope she had a wonderful life.
There were no co-ed schools in Australia in the 1940s and 50s. Boys went to boys' schools and girls had their own -- where they learned all manner of useful things like typing, sewing, cooking and all those things necessary for them to pursue a career as a wife.
Fortunately, things have changed.