A number of students have been expelled from Sydney's Pymble Ladies College after they were allegedly caught inhaling aerosols.
The five students were reportedly in years seven to nine at the exclusive North Shore private school.
Principal Vicki Waters declined to comment on any expulsions, but said the health and well-being of students was paramount.
"Pymble Ladies’ College takes seriously any issue that has the potential to harm the health and well-being of its students."