This is a consistent problem in Australia, too, with a 2012(?) report tabled in the federal House of Representatives identifying the same issue, although the percentage was about half of what you’ve identified. AITSL (a teaching peak body) have recommended several methods for addressing this and thanks greatly to the amount of respect held for John Hattie many Australian jurisdictions are working towards implementing them.

Lowered initial teaching load and effective mentoring partnerships are just two, but at my school we’re aiming to never have another new teacher burn out after their first year ever again.

The work of Dr Janet Smith at the University of Canberra has been influential in setting up a state-wide mentoring network and even a monthly drop-in ‘brains trust’ for new and struggling staff.