Trinity Academy Barnsley was approved by cabinet members in March, which allowed the site to be handed over to the Secretary of State for Housing, Communities and Local Government.
The site, which has remained empty since the demolition of the former Kingstone School in 2012, was bought for a nominal fee of £1 with the proviso that the council would not commit any additional funding to the scheme.
The consultation period opened on Monday and provides the opportunity for the public to give their views on the project.
Trinity Multi-Academy Trust’s chief executive, Michael Gosling, said: “Due to the increased population in Barnsley, particularly in young people of school age, there is a shortage of secondary school places which will last for the foreseeable future.
“The latest school capacity data was published in March 2020 and this shows clearly the lack of places and the need for a new secondary school in the Barnsley area.
“The aim is that we will add to the provision in the area offering young people and their parents a first class, exciting alternative option for their education.”
To help the public during the consultation period, the trust has organised online seminars to provide additional information about the scheme.
They will run on June 26, and July 10, both at 9am.
The consultation period will remain open until August 10.
To have your say on the plans visit barnsley.trinitymat.org/consultation.