East Renfrewshire Council said the new campus will be in Cowan Park, next to the existing school near the Johnny Kelly Pavilion.
And the planned new school will be of the same first-class standard as the original proposed.
The Johnny Kelly Pavilion will be replaced on a new site in the park, with the skate park moving with it.
They will become part of a fantastic sports campus, along with the new running track and pitches planned for the school, the existing new state-of-the-art 3G pitch and a planned cricket wicket.
It is set to be delivered in December 2016.
Convener for education and equalities, Councillor Elaine Green, said: “This is wonderful news for the young people, staff and parents of Barrhead High.
“There will be absolutely no compromise on the quality of provision – the existing design for the building can be used with just a few tweaks so it will be the superb school we have always promised.
“Barrhead High pupils will get the school that was always intended for them – and that they deserve.”
The designs for the new school campus show an amazing modern building with a beautiful boulevard entrance.
Initial plans will be lodged this week with a proposed start date on site in July 2015.
The existing Barrhead High will remain open throughout the building work with no disruption to the pupils’ education.
The school is being jointly funded by the council and the Scottish Futures Trust.
East Renfrewshire Council had initially identified a site elsewhere in Cowan Park. However, the Court of Session ruled that this was ‘common good’ land.