Between 1888 and 1992 a type of education existed in the Netherlands and Flanders, called the "Huishoudschool" (Housekeeping School) (Wikipedia Article in Dutch). It was a type of vocational training aimed specifically at girls, to teach them the skills of becoming a good housewife or maid. Classes taught were cooking, nutritional science, hygiene, cleaning and basic economic skills to balance the household budget. Though this kind of education seems a bit sexist by today's standards (boys were only allowed into the Huishoudschool from 1977 onwards), you can imagine the skills taught would have a great benefit to working class and lower middle class families' well-being.
Now, the Dutch are known for being uniquely tall, quite healthy, and quite frugal. While studies have been done on this phenomenon, researching everything from nutrition to the welfare state to evolution by sexual selection, I just now found myself wondering whether the Huishoudschool is a typical Dutch phenomenon or if it exists in a similar enough form outside of the Netherlands.
If it is indeed a unique phenomenon, it might help explain why the sudden increase in average height of the Dutch population (from the shortest people in Europe to the tallest in roughly a century) coincides perfectly with the founding of housekeeping education for girls.
It's not just a Dutch thing, "home economics" schools, courses, and colleges were very much a thing in the Anglo-American world as well. The question of whether it has an impact on people's heights is not something I can answer definitively, but I suspect that it's much much more complicated than that. Generally people's height correlates with a huge number of different factors, including nutrition, health care, and other environmental factors, so fingering one thing like this as the principal cause seems a bit far-fetched.