If any change is to be contemplated, teachers would probably support those who say the holidays should be extended into February when the weather is too hot for children to be in classrooms with no air conditioning.
The last week of January and first week of February are normally the warmest of the year and this week the temperatures have been stifling. Next week could be just as hot when all the schools are back.
But the argument for the holiday to run into February had more force when the weather was indifferent through Christmas and New Year. This summer and last, that was not so. Global warming may be bringing us longer summers starting earlier, thanks to higher sea temperatures in spring.
Schools already adapt to summer as best they can, moving classes outside where possible, scheduling camps and field trips, holding summer sports events and improving children's skills in the water. Willis would like to see school facilities used much more for holiday programmes to reduce the pressure on working parents.
While children and their learning should be the main consideration, she makes no apology for promoting the interests of working parents. Schools are not a child-minding service but they pride themselves on serving a community and that means adapting to its needs. Most of their pupils today do not have a fulltime parent at home. Whether their household has one parent or two, the parents are liable to be working with just four weeks holiday a year.
Twelve weeks of school holidays a year pose a constant problem. Daycare and holiday programmes help fill the gap for those who can afford them, and grandparents if they are up to the tiring task. But sooner or later, schools are going to be asked to adapt to today's social environment.
The discussion could start this year if a bill Willis has drafted is drawn for debate in Parliament. Early childhood education is already serving working parents better, schools should do so too.