FN09 ATK was based at training school Ollerton and was being used for pump training, as far as I'm aware it's not been used at driving school. It will going on the run shortly as T27P1 (Carlton), moving to P2 before the end of the year when the 60 plate wagons arrive. Hope this helps.
Ah I've got a picture of it at Carlton recently on flickr. It was bearing the 88 prefix which is training school but waynes comment totally makes sense.
Thanks
Added by Todd on 30 November 2010.