More than 5000 students are expected to flock to coastal Victoria to celebrate the end of school this weekend.
Police are warning the school leavers to look out for their mates and be safe as they descend on the Surf Coast, Bass Coast and Mornington Peninsula.
Police will this year focus on licensed venues and school leavers' accommodation areas, targeting anti-social behaviour, under-age drinking and drunkenness.
Anyone found to be drunk, disorderly or behaving in an anti-social manner will receive a $563 fine.
Police have also warned school leavers planning to head overseas to celebrate to be mindful of local laws and cultures and register with authorities before leaving.
Sergeant Wendy Cowling said that generally, most school leavers were well-behaved and did the right thing.
"The key to an enjoyable week to remember will be planning. Plan the night out and most importantly, plan a way home," Sergeant Cowling said.
Police have prepared for the celebrations by hosting schoolies presentations at secondary schools, to discourage rowdy behaviour and promote safety.
Parents have been urged to keep in contact with children and avoid giving alcohol to minors.