The charts give a breakdown of class sizes in primary schools across four Australian regions in 2010.
Overall, classes having 21 to 55 students held the largest share in all four states surveyed, except for South Australia. In contrast, classes containing over 29 students were a rarity in these areas.
Looking first at New South Wales, the number of 21 to 25 students per class was most common with 37%, followed closely by those with 26 to 30 and fewer than 20 students with 33% and 26% respectively. In South Australia, the amount of classes with less than 20 students was the largest number, while the percentage of classes comprising 21 to 25 students was 30%. The percentage of classes with 26 to 30 students in South Australia was 5% less than in New South Wales. Notably, the figures for the biggest class size in both states were the same, each standing at only 4%.
In Australia Capital Territory, classes consisting of 21 to 25 students constituted the majority, at just over half of all classes sizes listed, compared to 38% of classes having no more than 20 students. Only 10% of classes had 26 to 30 students and 10 times the value of classest with 30 or more students. In Western Australia, the predominant class size was, again, 21 to 25 students, occupying 42%. While there were no major differences between classes of less than 20 students and from 26 to 30 students with figures of 26% and 27%, in that order, in the last position was the largest class size, as its share was only 5%.