The ATAR results of 45, 565 students who this year completed their Victorian Certificate of Education were released from 7am Thursday morning.

"Polar opposite" twins Charlotte and Madeleine Kay were not sure what to expect.

"I couldn't sleep," Charlotte said. "Macca didn't get out of bed until her alarm woke her, so she was chilling out in bed, but I was up at 5 o'clock freaking out."

The sisters supported each other through music performance, the only subject they had in common.

"She's better in some parts but I'm better in some parts, so we had each other to ask for help," Madeleine said.

Otherwise, the two were in friendly competition.

"She's really smart so I wanted to do better than her in something - and I think I failed in that," Madeleine said.

"I tried so hard and you still scored better than me," Charlotte laughed back.

Principal Cassandra Walters said staff were excited for the future of their students.

"That they've finished their VCE studies is a significant achievement," Ms Walters said.

Madeleine has "no idea" what she would do next, whereas Charlotte has deferred her offer to study Law and International Studies at the University of Wollongong while she takes a gap year working as a boarding assistant at a school in England.

Troy Armstrong was the dux of the college.

He was "pretty happy" with an ATAR in the 90s.

"It's what the ATAR calculators were expecting, honestly I was expecting a low to mid 80," he said.

Troy's subjects were mathematical methods, specialist physics and chemistry, and English language.

"I enjoyed the science and maths subjects, I think mostly because I'm good at them," he said.

"I really did not like English, it's always been a burden."

He has plans to go to university in Melbourne, but said his future was "an open book" at this stage.

In the lead-up to the release of the ATARs the Victorian Tertiary Admission Centre tweeted "your ATAR doesn't define you".

Though principal Walters was "quite impressed" overall with the students' results, she said ATARs were not the "be all and end all".

"It's one point in time and...there's lots of ways to get into university and pursue your future career pathways," she said.

The twins agreed and added some advice they would have given themselves at the beginning of their year 12 journey.

"It didn't really need to be as stressful as I made it in my head," Charlotte said.

"Listen to Charlie less, 'cause she stresses me out," Madeleine said.

Troy said he also had some advice for future students.

"Work hard, but divide your time up equally," he said.

About 130 WSSC year 12 students received ATARs, including seven international students and a handful of students from refugee backgrounds.

Most of the students received the ATAR they needed to get into their university course preferences, with second round offers coming out next week.

Across Victoria only 37 students received the top ATAR of 99.95.

NSW student ATARs will be released on December 17.