Hundreds of furious teachers in Sydney's south west will strike on Thursday, after a long serving staff member was refused a transfer to another school.
Sackville Street Public School at Ingleburn along with dozens of nearby campuses will be badly affected, with letters sent home to parents today.
Gary Zadkovitch from the Teachers Federation says they've been left with no choice.
"This teacher has been travelling for over 11 years, from Engadine to south-west Sydney, her transfer came up on the system and she’s now been told that that transfer will not be processed and she must compete with other teachers for the vacancy," Mr Zadkovitch said.