The decision was announced today by the university council following 10 days of suspension.
The continuation of semester one will take place on June 13, which is a public holiday. This is so classes will kick off on Tuesday, June 14, while the medical students will commence classes on June 6.
UPNG acting chancellor Dr Nicholas Mann said the suspension has given the council ample time to reorganise the academic calendar and also for the students to think things through.
The 2016 academic calendar is now extended by another three weeks past schedule.
The restructured calendar will see semester one continue from June 13 to July 22. This will head straight into semester two from July 25 to November 5.
Mann appealed to parents to let their children and encourage them to return to classes.
He urged students to avoid situations that will lead to another suspension as they will do more damage to their academic year if they continue to boycott.