Consultation into the proposed closure of Skerton High School is due to begin today, Monday, September 9.
Lancashire County Council officially agreed last month to go out to consultation on the school’s future.
The school was described as “inadequate” in its most recent Ofsted inspection.
Matthew Tomlinson said low pupil numbers and teaching standards were two of the reasons the school could close.
The school has fewer than 200 students and Mr Tomlinson said only 18 had applied to start the new academic year, even though it has provision for 90 students.
The local authority said pupils would be transferred to other schools in the area if it did close.
A decision is expected by April 2014.
A consultation event will be held at the school on October 9.
Parents also plan to air their concerns at the proposals by launching their own campaign.