In my part of Canada (New Brunswick) the high school weights are different than for American high schools. The "Varsity" (U18) boys are throwing a 5kg shot and a 1.5kg weight, and the "Varsity girls are throwing a 4kg shot and a 1kg discus. Both the "Junior Varsity" (U16) boys and girls throw a 4kg shot, and a 1kg discus. Although it has been petitioned that the governing body change the weights (ESPECIALLY the JV girls weights) they neither responded nor made any changes to the system.
Other provinces in Canada use different systems. I know that Nova Scotia (where I currently live) uses a 6kg shot and 1.75kg disc for Varsity boys, and 5kg shot and 1.5kg disc for Junior Varsity boys, while using a 4kg shot and 1kg disc for varsity girls and a 3kg shot and .75kg disc for Junior Varsity girls.