"We can't get the parts to fix it, so it may not be able to be driven again. That would have a huge impact on us."
A group from the school was unable to go on its weekly outing yesterday because of the damage.
"Why would anyone try to steal from us?" Mrs Alexander asked.
"We got the van in 1998 from Variety Clubs New Zealand but, because it was donated, we don't get the benefit of the sale. All we get if it goes back is $1.
"We are one very unhappy group of people, all because of the actions of someone who does not care or understand how much damage they have caused."
Dunedin police were keen to hear from anyone with information on the attack, Acting Senior Sergeant Damion Rangitutia said yesterday.
"It's certainly a shame that someone would do something like this to a school like that and we'd be very interested to hear from anyone who saw anyone walking around or acting suspiciously in the area, around the 22nd or 23rd of March.
"It's also a timely reminder to people to take preventive measures and make sure their cars are secure."