Primary school students have been left traumatised after a number of their pet chickens were slaughtered in regional Victoria.

A Victoria Police spokesperson said an unknown male had entered White Hills Primary School in Bendigo around 7pm on July 13.

"The man jumped a fence into the school's chicken coop, killing a number of chickens and then fleeing the scene, taking some of the chickens with him," the spokesperson said.

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The spokesperson said the man was perceived to be of small build and was wearing a white hooded top.

The Department of Education and White Hills Primary School have been contacted for comment.