Twenty-five Monaro High School students entered the University of New South Wales (UNSW) school mathematics competition this year and six students received awards.
Year 7 student Dumidu Karunaratne came in the top four per cent of year seven students and received a distinction.
Credits went to Ben Noakes in year 8, Zac Clarke, year 10, Lachlan Sturgeon, year 10, John Oost, year 11, and Miranda Evans in year 12 also got a credit.
Maths head teacher Janet Johnston said every year group achieved a credit and she was very pleased with the results.
"I was excited to see the results. Dumidu was in the top four per cent of his year group in NSW and the ACT," Ms Johnston said.
The maths competition is a three hour open-book exam and entrants can take books and materials into the exam, but not computers with an internet connection.
Each year about 1000 students from NSW participate in the competiton. In recent years, the UNSW School Mathematics Competition has served as one of the selectors for the Australian team in the International Mathematical Olympiad.