A new analysis by the Public Education Foundation has said Australia’s declining performance in maths, reading and science will cost $120 billion over the next 45 years.

The analysis claimed kids at the top end of the system have better access to teacher coverage and resources, whereas the bottom 10 percent of students have fallen one and a half times as much as those in the top decile.

This is the first time the foundation has linked students’ results as an impact on the economy.