The annual school, which this year is celebrating its 20th anniversary, aims to raise awareness among secondary pupils of university study options in science.
Dr Russell Frew, of the university chemistry department, is teaching the new forensics class, and is undertaking his first teaching role at the school this year.
"It's very rewarding. It's a fun thing to do," Dr Frew said.
The 10 pupils attending the new class were enjoying learning more about some of the secrets of crime scene investigation, including how to locate and identify fingerprints, how to analyse the ink written on documents, and how to probe the secrets of mysterious white powders, he said.
The latest week-long school is the second largest in the school's history, attracting 240 pupils.
School co-ordinator Rose Newburn said the latest school was running smoothly.
Participants celebrated the anniversary at a dinner last night.
Comments were made by three of the school's initiators, Prof Gerry Carrington, Kate Rice, and Prof Derek Holton.
Janelle Deaker (17), a year 13 pupil at Gore High School, said the school was "really good" and "a real eye-opener".
"I never knew there were so many careers in science."
She was enjoying her research studies in pharmacy, including making ointments and sunscreens, and planned to pursue health science studies at Otago University next year.
"It's all quite challenging, but it's all really fun, " she said.