Editing error
The train ride into Zootopia should have come before the police academy.
shareSince we don't meet any of the other trainees or her instructor again after her training we can assume that the training took place somewhere else. Judy was the best of her class, only she was recruited by the ZPD.
shareThe police academy, for the city, is probably elsewhere in the county that the city of Zootopia lies within.
"Eat your vegetables." Smith ~ 'Shoot 'Em Up' (2007)