The Labour Party has it on good authority that school class sizes are a subject that can move votes. John Key's rapid reversal of a 2012 Budget decision to increase intermediate class sizes was the judgment of a Prime Minister who had not been unnerved by opposition to asset sales, spy legislation, anti-smacking law and much else. Labour has taken the cue, announcing at its annual congress at the weekend that a Labour-led Government would train 2000 more teachers to reduce all classes by two pupils.
The money would come from the $359 million earmarked for the Government's plan to improve the quality of teaching, which Labour says it would scrap. The stage is set for an election debate between quantity and quality. National will say the plan it announced six months ago to cross-fertilise schools with designated executive principals and lead teachers offers much more educational value than another reduction in class sizes.
Labour will say it is more important to reduce the average class from 28 to 26 in primary schools and 25 to 23 in secondary classrooms.
Every parent believes the smaller the class, the more of the teacher's attention their child will receive. It is a powerful political offer, but obviously governments have to draw a line somewhere for the sake of taxpayers.
The ideal ratio from every parent's point of view might be one-to-one. Long before that point, surely, parents would realise there is value in learning as a class. There will be a minimum number below which pupils lack sufficient company for the stimulation and skills of working together. Experts may be able to agree on an optimum class size, but if so the figure is lost in the constant calls for reductions.