"There's a few minor injuries but all are in hand and the majority have gone back into class. We'll continue to monitor them over the course of today and ongoing this week and further," he said.
"There were definitely a few boys who were shaken up and those boys have obviously requested to go to guidance, etc or the matron regarding their wellbeing."
Tuck said the school's thoughts and prayers are with the injured van driver and driver of the bus.
A spokesperson for Tranzit confirmed the bus involved in the accident was one of its charter buses.
"I can tell you that there are no injuries to our passengers and no injuries to our driver, which is a huge relief and our thoughts go out to everyone involved. Our passengers were transferred onto another bus and taken to school and our regional manager is visiting with the school to offer support."
As information was still being gathered about the accident the company was unable to comment further.
Police said it was notified about the accident on Mountain Rd at Ngaere at about 7.30am. The road was closed for several hours but police were able to reopen State Highway 3 shortly before midday.
- RNZ