The provided pie charts compare the sizes of elementary school classes across four different Australian states in 2010, with class sizes ranging from fewer than 20 students to more than 30 students. Overall, the majority of classes in the surveyed states contained around 21-25 students, except for South Australia, which exhibited a different trend. Additionally, Western Australia had the highest proportion of classes with over 30 students at that time.
In terms of categories with the largest percentage of classes sized 21-25 students, more than half of the classrooms in the Australian Capital Territory fell into this range, accounting for 51%. Furthermore, classrooms with fewer than 20 students, 26-30 students, and more than 30 students made up 38%, 10%, and 1% of the total classes, respectively. The figures for Western Australia were relatively comparable across each class size, except for the over 30 students category, which was five times larger than that of the Australian Capital Territory.
Regarding the other states, the proportion of classrooms with more than 30 students in New South Wales and South Australia was identical, at approximately 4%. Additionally, the distribution of class sizes in New South Wales included 26% for under 20 students, 37% for 21-25 students, and 33% for 26-30 students. South Australia followed a similar pattern, but for the under 20 students category, which made up the largest share at about 36%.