The following is an excerpt from the Executive Summary of the Deloitte Access Economics cost benefit analysis published on 9 September 2020.

There are few, if any, education interventions that have undergone an assessment on this basis in Australia. QTR is also one of a small number of rigorously assessed professional development (PD) programs that have demonstrated a causal effect on improving student learning.

QTR compares similarly or favourably to the few other rigorously tested interventions in Australia on a cost-effectiveness basis, both relative to other interventions and Evidence 4 Learning (E4L) benchmarks. At $127 per student, the cost of QTR is categorised as very low under E4L guidance.

[F]or each dollar spent on QTR the lifetime GSP uplift is equal to between $40 and $150, depending on the degree of fadeout assumed. Importantly, there are also non-monetised benefits which stem from improving student academic achievement, but which are not quantified in dollar terms for the purpose of this CBA and therefore not included in the headline results. These include benefits to health, wellbeing, civic participation and interaction with the police and judicial system.

You can download and read the full cost benefit analysis here.