Table 1.

Mean, minimum and maximum age of children (in years and months), and number of each sex in each year level.

	Mean age	Minimum age	Maximum age	Male	Female
Year 4	9;11	9;1	10;5	17	25
Year 5	10;10	10;2	11;8	18	23
Year 6	12;0	11;4	12;10	20	21
All year levels	10;11	9;1	12;0	55	69