New Zealand teenagers are spending 42 hours a week on the internet - one of the highest figures in the world and double what it was in 2012.
The finding comes from the OECD's Programme for International Student Assessment or PISA, which also found there is little point sending emails to teenagers these days - overseas and here fewer teens are bothering to read them and nearly all are spending more time reading online chats.
The report also says this country is one of the very few where computer use in the classroom is linked to better reading skills.
Here's education correspondent, John Gerritsen.
