The Herald understands the school in Papanui was on such high alert the children were allowed only a little water as they weren't allowed access to toilets.
It is believed the children have all returned home safely.
Read, who is leaving to play rugby in Japan after the World Cup, partly decided to make the move before his children were too old.
Read and his wife Bridget have three young children and they have always wanted to have an overseas experience together.