Ethan Tan, 15, became the youngest student ever to get the highest possible ATAR of 99.95 on Friday.

The Cranbrook student is one of only 46 students across the state to have achieved the top ATAR this year, and has his sights set on Cambridge or the Massachusetts Institute of Technology for next year.

Ethan Tan, 15, has achieved the highest possible ATAR of 99.95. Credit:Ethan Tan

"It's a little bit surreal and a little bit scary wondering what's next but I'm really excited too," Ethan said.

"I'm really happy about it especially as I put so much time and effort into my studies and worked so hard. It makes it extra special to be so young and achieve this result."