Grey suits were common as in England, but many boys also wore navy blue suits which were not common in England. A lot of Australian schools required school uniforms . Many still do, but the standards have fallen in recent years. Catholic schools tended to be more strict about school uniforms than state schools. Secondary schools had similar uniforms, only blazers were also worn.
Many schools let the older boys wear long pants.
Some parents, however, insisted that even their older boys wear shorts. Many schools required the junior boys to wear caps. Most state schools didn't give nearly as much attention to uniforms. This varied greatly from school to school. There was no national regulations about school uniforms.