Mr Brown said the 17-year-old was to attend Victoria University next year to study commerce.
"There was a powhiri and a very powerful haka that was led by the prefects. It was a very emotional time."
He said a number of fellow students were also orchard workmates with Ira.
The school's Year 13 dean, Anne Millward-Brown, said Ira's sister received the award on his behalf.
"It was a very emotional time. To lose a boy is just awful."
She described Ira as a "very bright, hard worker" who was well liked by all students and staff members.
Police and the Ministry of Business, Innovation and Employment are conducting an investigation into the accident.