The questions for all three days of this year’s nationwide primary school tests are for sale for €450 on the internet sales site Marktplaats.nl, according to the NRC.

The paper was made aware of the availability of the questions by a reader who bought a test paper for a family member in 2012.

He was approached this year by the same seller who offered him all this year’s questions. According to the reader, staples can be seen, meaning the seller is in possession of a physical copy of the tests.

Confidentiality

A spokesman for Cito, the private company which draws up the tests, told the NRC the organisation was aware of the leak and has not yet decided whether to recall the questions.

How the leak occurred is not clear. All Cito staff sign a confidentiality agreement and schools also sign for careful handling of the questions.

This year’s Cito test takes place on February 5, 6 and 7. Most children in the final year of their primary school take the tests, which are used to determine what sort of secondary school they will go to.