Six of the country's 17 prisons have exceeded their performance targets, eight are operating effectively and three need improvement, the Department of Corrections says.
It is the first time new prison performance tables have been released.
Each prison is given a performance grade of exceptional, exceeding, effective, or needs improvement. The ratings are determined by a series of steps.
No prison was listed in the exceptional category.
Invercargill, Manawatu, Tongariro/Rangipo, Wakeria and Whanganui prisons, and the Mount Eden Corrections facility were listed as exceeding their performance targets.