Concerns have been raised about the way the Academies Enterprise Trust has been running Tendring Technology College.
So much so, members of the National Education Union who work at the college have decided to down tools for three days starting on Tuesday.
They will form a picket line outside the sixth form’s Frinton and Thorpe-le-Soken campus in response to a planned staffing restructure.
The union’s members believe the shake-up will result in cuts to teaching and support staff jobs from September and impact students' education.
The strike will come a week after the college's headteacher Michael Muldoon announced his resignation.