A former teacher pleaded guilty to sexually assaulting two students in the 1980s.
The offences involved repeated sexual touching over a two-year period during school trips and at the offender's home.
The victims disclosed the abuse 31 years later.
The court imposed an 18-month custodial sentence followed by one year probation, rejecting the defence submission for a conditional sentence.
The court found that despite the offender's age, guilty plea, and lack of reoffending over 34 years, the gross breach of trust, multiple victims, and episodic nature of the offending required a denunciatory and deterrent custodial sentence.