Across the state, 118 written exams will be conducted until 4 November.
Minister for Education Adrian Piccoli wished this year's HSC students all the best.
“They have been studying hard all year and I’m sure their hard work will pay off," Mr Piccoli said.
This year, a record 69,350 students are on track to achieve the HSC credential.
“Obtaining the HSC qualification is a fantastic achievement. It is internationally recognised and the pinnacle for school-based education in Australia.”
Students will receive their results via email, SMS and online from 6am on 15 December.