[14] On average, over 80% of its students achieve in the top 20% of the state, with a majority gaining an Australian Tertiary Admission Rank of more than 90.

The school ranked first in the state for English Standard in 2022 with an average HSC mark of 80.5 for the cohort of that year.

[20] In 2010, fifteen students from the school's graduating class received Premier's Awards for All-round Excellence in the NSW HSC.

[21][22] One of the reforms advocated by the 1903 Royal Commission into NSW Education was the establishment of classes providing courses which would involve technical subjects.

[28] Sydney Technical High School won a competition that tested skills in a science and engineering challenge.

Students competed in the regional competition at the Australian Nuclear Science and Technology Organisation (ANSTO) recently.

In teams of four the students took part in mathematical challenges designed to build teamwork skills and promote a love of maths.

2nd prize was awarded to Sydney Technical High School and the competition is run annually by the Australian National University.