The country's largest secondary teachers' union is also closing in on a strike.
ASTI members are to walk off the job in less than a week for the first of seven days of stoppages. The row centres on raising pay levels for new staff.
The country's largest secondary teachers' union is also closing in on a strike.
ASTI members are to walk off the job in less than a week for the first of seven days of stoppages. The row centres on raising pay levels for new staff.