Schoolies Festival organisers and police have given the class of 2019 full marks, following the completion of a successful event on the Fleurieu Peninsula.
Event police commander Superintendent Mark Fairney said of the 1100-plus driver tests undertaken over the weekend, only one person - a 40-year-old male - was found drink driving and three people with positive drug tests.
On the third and final day of the event, only one arrest was made: a 20-year-old, who was found drinking in a dry zone, and then gave police false identification details.
Three people had dealings with police for drug-related incidents: one was issued with a drug diversion for having small amounts of cannabis and cocaine, one was given an expiation for cannabis possession, and an 18-year-old was located with MDMA tablets "down his trousers", Supt Fairney said.
Thirteen expiations were given out, including nine for drinking or carrying alcohol in a dry zone, three for disorderly behaviour, and one for possessing a firework.
"As police commander I'm very pleased with what little activity there was - with nearly 10,000 people in the area there were very few incidents," Supt Fairney said.
"(On night three) there were absolutely no incidents in Warland Reserve - in fact, there were no incidents the entire weekend," he said.
He said there was only a small number of people brought to the huge medical site set up in the car park opposite Warland Reserve, which was designed to reduce the strain on the South Coast District Hospital and local medical resources.
"The community in Victor Harbor was justifiably pleased they're not coming to a choked hospital," he said.
"My hat goes off to the medical staff and volunteers from St Johns, SA Ambulance, the paramedics and doctors."
He urged school leavers - and their caregivers - to play it safe on the roads home.
"There are still voluntary breath testing stations in caravan parks, which is a good initiative we continue to have at Schoolies Festival," he said.
"Police will have both a visible and over presence out of Victor Harbor."