The gym at the badly vandalised former Shirley Boys High School site could still be saved.
Damage estimated at 3 million dollars threatened Banks Avenue School taking over the sports hall and hockey turf.
Officials were earlier baulking at the clean-up bill for the facilities.
Education Infrastructure head Kim Shannon said there has been no decision to demolish the gym and the cost of repairing it and another building is still being assessed.
She said the ministry is working with the school to find the best investment approach for developing the new school campus.