"It is felt there are too many variables involved here, including a bus run with students from across the school classified as close contacts," Haggo said.
"I would like to thank all those who were identified as having to take a test doing this today, your children were very brave."
In the notice, Haggo thanked the school's first case's family for moving quickly when the concern was raised.
"Our thoughts and best wishes are with this whānau and just know we are thinking of you at this time.
"It is important to understand it could have been any one of us that could have caught this awful virus and so I would ask that we don't speculate or get concerned about who. Pongakawa is a family and it is times like this we stick together, hang tough and show loads of aroha."
Haggo said he hoped this would be a short period of offsite learning and things would move back into a school setting next week on the date indicated.