Mr Crozier said he was also considering going overseas in the next couple of years for a sports event, such as a rugby match.
Westbrook School principal Colin Watkins said they were a school where the staff had longevity.
"Him being here for 20 years is not unusual and when someone does leave it's like you're losing a member of family."
Mr Watkins said there were "not many blokes" in the education industry, and he and Mr Crozier would talk about fishing and sport.
"I'm going to miss that."
He said the younger children would "just charge up to Kerry and hug his leg as he walks past".
"Kerry is going to be seriously missed by all of us."
Mr Watkins said there would be an afternoon tea to farewell Mr Crozier on his last day.
"We hope to have the new caretaker start in the last week so Kerry can show them the ropes."