Eight students were among those charged for possessing marijuana and viewing pornography.
The students were caught in an empty house near their school.
A police statement said officers conducted a three-day ‘Operation Black Ice’ and arrested a total of 35 people.
The accused will appear in court on 5 December.
The operation was focused on eradicating marijuana and a total of 29 searches were conducted, including a vessel.
Thirteen young people were arrested at another empty house near Karri Shopping and Freswota 6 Hill for marijuana possession.