New Zealand is at risk of failing a major international test of maths, reading and science, the PISA test, before it has even begun.
Too many schools are refusing to participate in the OECD's Programme for International Student Assessment for 15-year-olds because of the stresses caused by Covid-19.
The Education Ministry has warned the government that if it can't persuade more schools to sign up, this country's results will be worthless.
Here's education correspondent John Gerritsen.
