Katerina Chua, from Dalkeith, won the 2013 Beazley WACE Medal for achieving the highest score across five courses in Year 12.
It is the second time the prestigious award has been won by a school back-to-back since it began in 1984, with the feat also achieved by Hale School in 2000 and 2001.
Katerina also won a General Exhibition, awarded to the top 40 academic students, a Course Exhibition in chemistry and Certificates of Distinction in chemistry, literature, mathematics and physics.
The 17-year-old and her twin brother Alexander, who attended Christ Church Grammar School and ranked fifth in the General Exhibitions, both achieved the highest Australian Tertiary Admission Rank of 99.95.
‘I was really happy with (my results) but it wasn’t until I got the phone call that I was actually shocked,’ she said.
Katerina said while she was happy to have ‘smashed’ her brother’s results to win the Beazley, she was proud of him to have achieved so highly.
‘It’s not much fun if you both do badly or one of us does badly; it’s only happy for me if we both do well,’ she said.
Katerina said she did three to four hours of work each school day, but only studied for tests beforehand because she worked on questions and assignments throughout Year 12.
Katerina and her brother both plan to study at the University of WA and contribute to their family’s long history of working in the medical profession.