Blaxland High School is a government-operated comprehensive secondary school located in Blaxland, a suburb in the Blue Mountains region of New South Wales, Australia. Established in 1977, the school enrolled approximately 1,000 students in 2018, from Year 7 to Year 12, of whom five percent identified as Indigenous Australians and eight percent were from a language background other than English. The school is operated by the NSW Department of Education; the former principal was Nikki Tunica.