WA public schools had an increasing number of student suspensions in junior classes for children as young as five last year.
Education Department figures show the number of suspensions for children in Pre-primary and Year 1 surged 30 per cent from 372 in 2010 to 488 in 2011.
Most suspensions were for children who hit or intimidated other students or disobeyed school rules.
More than 50 Pre-primary children and 170 Year 1 students were suspended at least once last year.
Two Pre-primary and 22 Year 1 students were suspended more than four times.
"The majority of suspensions in the Pre-primary and Year 1 age groups reflect that they are adapting to school routine and learning to work with other children, perhaps for the first time," early childhood development and learning executive director Garry Hewitt said.
Education Minister Liz Constable said the rise in suspensions for Pre-primary and Year 1 students came as enrolments increased by about 2000 students in those year groups.
Ten child and parent centres to be set up at public primary schools would help address behaviour issues in young children through counselling and parent support programs.
Dr Constable said she was encouraged that the overall number of suspension notices issued to all year groups dropped for the second year in a row, from 26,802 in 2010 to 25,136 last year.
The number of students barred from classes also fell from 12,198 to 11,817 with some students getting more than one suspension notice.
A third of all suspensions were for physical assault or intimidation of other students.
About 6 per cent were for physically assaulting teachers or other staff members and 18 per cent were for verbally abusing or harassing staff.
"I am hopeful the drop in suspensions reflects that the message is getting through to students that disruptive behaviour in our schools will not be tolerated," Dr Constable said.
"While we continue to support teachers and principals to deal with these issues, the behaviour of students is a shared responsibility between school and home."A total of 47 students were expelled from public schools last year for extreme behaviour, compared with 54 in 2010.
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