Superintendent Ashley Fua says the Women and Children Crisis Centre helped run a workshop for 28 recruits addressing core questions of fairness, equity and equality and how they treat women.
He said an earlier session revealed gender bias was also hindering the performance of officers in the field.
Mr Fua said the training helped the recruits examine their own attitudes.
"It is quite a reflective session, it asks very hard questions because you're really looking at your Tongan culture and how society looks at women and men.
