Teachers at Downhills primary school in Haringey, north London, will hold an indicative strike ballot over plans to force academy status on the school.
This follows the sacking of their governors by Tory education secretary Michael Gove last week.
Gove has imposed a new governing body because the old one opposed his plans to force Downhills to become a privately run academy.
The new governors arrived at the school last Thursday—to be greeted by a protest by angry parents.
One of the new governors is Dan Moyniham, chief executive of the Harris Federation.
The Harris Foundation is a chain of academies and is the government’s preferred sponsor to take over Downhills.
The indicative ballot will take place from Friday of this week until next Monday.
The campaign against academies in Haringey has won enormous support from parents, teachers and other trade unionists.
A strike against the plans has the power to stop Gove.