The new students, who started arriving during the weekend, have been introduced to the university officials as well as made aware of UPNG's expectations.
In his welcome message, vice-chancellor Professor Albert Mellam informed the first years of the Student Charter.
"The university takes student discipline very seriously," said Professor Mellam.
"I want to make it very clear that you must conduct yourself with an attitude that does not come into conflict with the established guidelines of the Students' Code of Conduct.
"If you breach these principles, the university will 'show you the door' and bring an end to your studies."
The Student Services told Loop PNG that registration for the first years will begin on Thursday.
Meanwhile, the graduating students are waiting to meet with the administration regarding the K600 graduation fee.