Judge Mackintosh says McCartney made a candid admission to the offending, but had no explanation for taking the money other than to cover over-spending during her emotionally difficult relationship with her husband.
She says the victim impact statement from Parkvale School reveals they are very upset over the offending, and the case has been a major blot on the school and their pride in having good moral values.
Reparation was not sought in court today as part of the sentencing, as the Ministry of Education is undertaking civil proceedings against Tania McCartney to retrieve the full amount taken.
The principal of Parkvale School Mark Gifkins and a number of teachers were in court today for the sentencing.
Mr Gifkins says it's a sad case for everyone involved, including Ms McCartney's own family, and the entire school community.
He says it allows closure for him and his wife, became Tania became a really close friend to them and the offending has really hurt.
Mr Gifkins said the stealing came totally out of the blue, and he hoped the school could recover the full amount in due course.