More recently, NZ had the Novopay debacle: https://en.wikipedia.org/wiki/Novopay https://en.wikipedia.org/wiki/Novopay The software itself, before fixing it, c

More recently, NZ had the Novopay debacle: https://en.wikipedia.org/wiki/Novopay https://en.wikipedia.org/wiki/Novopay The software itself, before fixing it, cost $182mm and covered payroll for 90,000 teachers. That's over $2000 per teacher. It cost another $45mm to fix it after this.