Secondary school teachers are holding the last of a series of strikes for the year on Wednesday.
Members of the Post Primary Teachers Association are refusing to teach Year Nine students as a protest over their stalled collective agreement negotiations.
The union has held the one-day rostering home actions in almost every week of the fourth school term.
Though it is the last of this term's strikes, Wednesday's action is not the end of the dispute.
The PPTA plans to take further action next year unless the collective agreement is settled.
The union says the Ministry of Education's last offer was a pay rise of 2.75% over two years plus $800.
However, the talks are stuck on issues including limits on class size.