Once again people seem to be limited by their own experiences.
Some schools don't have parent pay. So all the school trips,swimming,whatever equipment,school dinners,breakfast club etc has to be cash or cheque with all the forms that come with them.
Some people are under the breadline so budgeting,meal planning, shopping, hunting around for best deals ,switching suppliers is essential.
Some people don't have nannies or family around to help with all the random childcare needs that crop up,or even the usual ones.
Some disabilities require a higher level of involvement with schools,professionals,appointments etc.
Some work places have a no phone policy or access to a computer to enable you to do stuff when things are slow. And many people end up working through their break and/or lunch.
Some people have more than one child,sometimes at different school with entirely different dates/times for everything from parent's evening to when the term end.
And a lot of things can just be jotted down in the diary/on the calendar but they actually have to be sorted and done not just written down.