Reforms to Gloucestershire's secondary schools will be discussed at an meeting on Friday.
Shire Hall education bosses and head teachers will come face to face to talk about plans which could see three secondary schools close.
The event has been organised by BBC Radio Gloucestershire in response to hundreds of calls and e-mails to the station about the proposals.
The event is taking place at Gloucester's Crypt Grammar School.
A total of 13 secondary schools in Gloucester, and all the county's sixth forms, are affected by what is being billed as the biggest shake-up in education since comprehensives were introduced.
Last year, Ofsted said the provision of sixth form education in the county was "unplanned, uneconomic and ill-fitted to the needs of many students in smaller schools."
Under the review, sixth form provision at the smallest schools could end, and a new college could be created in Gloucester Docks, or linked to Gloscat.
The Crypt School in Gloucester, which dates to 1539, looks certain to close, or be merged with Ribston High School.
Oxtsalls and Central Technology also face an uncertain future.