Everyone agrees: We need to talk about how we fund our schools. Ranking schools in 10 decile bands according to the relative deprivation of their neighbourhoods is a very crude way to decide resourcing.
Up to half of the funding available to New Zealand's 2500 school principals is allocated according to the 2006 Census, and whether their pupils at the time lived in blocks of state houses or in leafy green neighbourhoods full of high-earning professionals.
Eight years later, when those children have long since left school, it seems absurd.
So, rightly enough, Education Minister Hekia Parata wants to talk about how we fund schools. The trouble is, Parata talks fast. She talks faster than her advisers can think. In her Herald on Sunday interview proposing to fund schools by pupil progress, she has left her education officials behind, she has left the teaching profession behind, and she has almost certainly left parents behind.
In racing ahead with the idea of school performance funding, she finds herself isolated, with neither the measurement tools to reliably compare pupils' progress nor the evidence to show it can work.