Form four candidates who will finish their exams on Thursday and Friday have been urged to return home after the last exam papers.
The candidates were urged not to engage in unlawful activities including drinking after the exams.
Matungulu OCPD Joseph Chesire said students who will be found loitering in the streets after the exams will be arrested.
He said immorality among youth will not be tolerated.
"Most of these children go out parting, using alcoholic drinks among other drugs and this exposes them to many dangers especially the girls who even get unwanted pregnancies during that period," said Chesire.
He called on teachers and parents to help the teenagers in counselling so that they become good citizens.
The OCPD was speaking in Matungulu on Wednesday in his office.
Most form four candidates will sit for their last end of year exams on Thursday and Friday.
He warned bar owners who will be found selling beer to underage people that they will be dealt with accordingly.