Vandals have damaged classroom windows and left glass bottles strewn across the campus grounds of Mooroolbark East Primary School.
Footage of the culprits has been shared on social media and Mooroolbark police have confirmed the matter has been reported, with an investigation currently underway.
A group of about five people were seen entering the school grounds through the front gate on the evening of Thursday 20 January.
Teachers had to return to the school to clean up the smashed glass and repair prepared activities for the Prep students.
In a social media post, MEPS acting principal Brant Kennedy asked for any assistance in identifying the vandals and requested that should people see anyone entering the school grounds after hours to contact Mooroolbark police.
“Thank you for your support. Its really disappointing that our teachers put in so much work to have rooms ready for the kids arrival and people like this have no heart whatsoever,” the post read.
Anyone with any information are urged to contact Mooroolbark Police Station on 9725 9999.