I remember weighing myself in Year 5 as part of an exercise in maths. It stands out so clearly in my mind, it’s a full 20 years later and I can still remember my number, the numbers of the other girls in my class, the girl who cried because her number was the highest - we were 9

Children should not be aware of how much they weigh, or be introduced to this metric at all (it will find them eventually). That initial weight from year 5 maths is the yardstick by which I have understood the concept of ‘weight’ - and judged my own against it - ever since

‘BMI’ is another one. By Year 9 (age 13) we were taught what this meant, introduced to the labels, and encouraged to calculate our own - and thus categorised ourselves for the first time as things like ‘underweight’ (bragging/relieved) or ‘obese’ (humiliated/ashamed/defensive)

Basically: bad idea. Every child will eventually learn the currency their weight or appearance carries as they grow up. Shelter children from this shitty truth for as long as possible. The lessons we learn in a classroom (that linger) are often not the ones the teacher planned.