Parents of Lourdes Primary's 400 pupils were summoned to an emergency meeting on Friday night. They were told the building in Cardonald, constructed eight years ago, has severe structural faults and will be shut until at least the New Year.
The council is now looking at possible legal action against Miller Construction, the firm responsible for the building.
A council spokeswoman said: "The safety of our pupils and staff is our priority.
"We have launched an investigation that could result in instigating legal action."
Pupils are to be sent to three separate schools.
Parents were initially told their children would attend Sandwood Primary in Penilee; Gadburn Additional Support for Learning School in Springburn; or Rosshall Nursery School in Crookston.
But last night plans were finalised that will see primaries one to three move to Sandwood. The P4 and P5s will go to Govan High and P6 and P7 classes will attend Lourdes Secondary.
Parents will be asked to go to Morrison's car park at 9am tomorrow, close to Lourdes Primary, and buses will take children to Sandwood and to Govan High. For the first day, a bus will take the children to Lourdes Secondary.
The pupils will be returned by bus to Morrison's car park at 3pm.
A council spokeswoman said: "Following the meeting on Friday, officials have listened to the concerns of parents about using the school in the north of the city. Staff have been working over the weekend and yesterday to work out a more local solution that will be easier for parents and carers."
However, parents still want to know why the problems with the school were not picked up sooner.
Gillian MacLachlan, whose son, Declan, is in P3, said: "At the meeting on Friday our head teacher said we should applaud Maureen McKenna for being honest and telling us the building was faulty.
"But why should we applaud the director of education for doing her job eight years late? This should have been picked up much sooner. Why was an independent assessment of the school not done at the time?"
A spokeswoman for Miller Construction said: "We are working with Glasgow City Council and its engineers to identify any problems.
"Investigations are at an early stage and we are unable to provide any further information now."
As reported in the Evening Times in January, Lourdes Primary was one of the worst- affected schools in Glasgow after the winter storms, when winds of over 95mph struck the city.
It suffered significant damage to its roof and gable wall and the gym roof, while the gym itself and five classrooms were put out of use.