The wrong HSC text was taught to Year 12 Dance students at Murrumbidgee Regional High School's Wade High site.
Parents were told about the mistake shortly before the HSC Dance exam, and the four students affected were given the correct text to study up on.
A NSW Department of Education spokesman said there had been confusion caused by two texts with similar names.
"The school is examining its practices to avoid a similar occurrence," the spokesman said.
"Priority was given to supporting the students and notifying their parents."
The text constitutes 10 per cent of the exam, but the department spokesman insisted the students would "not be disadvantaged" by the mistake.
"Exams will be marked by senior markers, who ensure that all students are appropriately rewarded for the knowledge, skills and understanding that they demonstrate," he said.
The error has been reported to the NSW Education Standards Authority, which is responsible for the Higher School Certificate.
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