Secondary teachers will be back on the picket line this week.

Union members in different regions will be striking at different times between tomorrow and Thursday.

It's their latest action, with teachers not attending meetings outside school hours since the start of term 2.

PPTA Acting President, Chris Abercrombie told Tim Dower that there's one main reason why they're doing it.

He says it's all about the recruitment and retention of teachers into the education sector.

LISTEN ABOVE