Parents and pupils at Llanrumney High School will gather outside the Senedd later to protest against its planned closure.
Yesterday, the Welsh Government's consultation which sought views on whether the school in Cardiff should close this August ended.
The school was put into special measures by the school inspectorate Estyn last year. A previous proposal was to close the school in August 2014 but the Welsh Government is looking to bring that forward to this summer.
The suggestion is that all pupils attend Rumney High School instead, or another school that parents prefer.
The move has been met by opposition with more than 550 people signing a petition against the plans. Campaigners say the move "will effect the pupils education and their confidence."
For more education stories from across Wales click here.
More top news
It will be a dry night with clear spells for all of us, but the south-easterly wind will increase, becoming rather windy by morning.
Hundreds of campaigners are marching through the streets of Cardiff calling for the city's grassroots music venues to be protected.
People in Wales living with cancer face losing over £500 a month in income after diagnosis, according to Macmillan Wales.