It then stated in bold, capitalised writing that all junior students needed to be picked up from inside their classrooms and that all students needed to be collected on time.
The notice also advised no children should be left to wait at the bus shelter and that parents should speak to their children about stranger danger.
It was understood a senior member of staff had also given a talk about stranger danger, but school representatives had not responded to the Weekend Herald last night.
Board of Trustee chair Tracy McMurtrie declined to comment, but said the matter had been referred to police, who were also unable to comment last night.
New Lynn Primary School is a decile 4 school that caters for about 300 students from Years 1 to Year 6.
Read the full notice: