South Australian state school teachers have voted to strike for half a day on Thursday over a pay and conditions dispute with the state government.
The Australian Education Union says a ballot of members has endorsed the action over the government's stand on its demands.
It will be the first strike by teachers for about 10 years and will affect about 900 schools and pre-schools.
The union says it wants reduced class sizes, more support for country schools and more resources for special needs children.
AEU state president Howard Spreadbury said the government should return to negotiations.
"We want them to come back to the table with serious consideration for what we brought to them earlier this year in terms of improvements to conditions in pre-schools and schools which have a direct impact on learning outcomes of our students," he told reporters on Monday.
The state government said it had already moved to increase education funding by $515 million over the next three years with extra money allocated for extra staff and infrastructure improvements.
Teachers will walk off the job from 9am until noon on Thursday with many expected to attend rallies in support of their claims.
