Exam season makes everyone unhappy. Why do we put up with it? | Zoe Williams

The intolerable pressure leads to terrible family rows. I thought I had escaped the worst of it with my children, but I now realise I was wrong

In September 2013, I thought I was the most intelligent person ever to exist. By some masterstroke of family planning, I'd managed to have two children, spaced almost two years apart, but because the first was born in September and the second August, they were in adjacent school years. By my calculations, I'd saved two whole years of childcare, which back then was more expensive than the mortgage, but only because at that point Liz Truss was still in charge of childcare costs, and had yet to screw with everyone's mortgage. And it wasn't even intentional, my miracle! I was a genius at the level of the ovary.

Obviously, I hadn't really thought through what the consequences would be, once they hit the meaningful-exam stage of life, which they still haven't - at the moment I'm just observing other people. GCSE and A-level events are objectively weird for a household whatever its composition, because for the first time, the kid's day has the highest stakes. You can pretend this is true for the preceding decade - big day, darling, you're the narrator in Sinbad the Sailor and yes it is a big deal whether you get the crabs and the dancing squid in the right order - but now it is real. It doesn't matter what your job is, whole human lives could be hanging off your performance; you still won't come anywhere near the singular tightrope of the exam, that absolutely atomised space where you're not allowed to ask for help, you can't take a little more time, and you'll be judged on the outcome, indeed that is all you'll be judged on, until such time as you achieve anything else, which could be never.

Zoe Williams is a Guardian columnist