A bisexual Sydney high school teacher who had sex with three teenage students has been jailed for at least six years.

Parramatta District Court judge James Bennett on Wednesday said Cameron White had abused his position as a teacher to exploit the vulnerable, naive students for his own sexual gratification.

Cameron White has been jailed for at least six years. Credit:AAP

White, 39, was found guilty by a jury in May of 14 counts of aggravated sexual assault and five counts of sexual intercourse with a person under care involving two female students and one male student at three Sydney school school campuses.

White, who is bisexual, denied having a sexual relationship with any of the complainants.