As many as 50,000 teachers and principals across the country will strike next Thursday.
Primary and kindergarten teachers are joining their secondary school counterparts in their bid to boosts salaries.
Both the PPTA and NZEI have rejected a second pay offer from the Ministry of Education.
NZEI president Mark Potter says union members want the Government to increase staffing and funding to schools and kindergartens and improve wages in order to attract and retain people in the teaching profession.
NZEI president Mark Potter spoke to Māni Dunlop.
