The Anti Academies Alliance (AAA) is holding an open steering committee on Saturday 11 October.
The meeting takes place at Senate House, University of London, Malet Street, London WC1E 7HU from 2-4pm.
Speakers include Green Party leader Natalie Bennett and anti-academy councillors from the Labour Party and the Lib Dems.
Natasha Steel, a parent from a victorious anti-academy campaign at Hove Park School in East Sussex, will also speak along with other campaigners.
The meeting will be a chance to discuss campaigning for a different vision of education during the general election campaign next year. Leaflets for the meeting can be downloaded at bit.ly/1sKawwB