The 'Transform Yourself' leaderboard

The measure is made public and ranked. Body weight is a private fact that fluctuates daily with hydration, growth and, for many students, the menstrual cycle. Putting it on a leaderboard with names turns something a student cannot fully control into a visible social rank. That is a direct hit on taha hinengaro: comparison, shame and anxiety, with the number becoming an identity rather than a data point.

Percentage body weight is a poor fairness measure. For the same absolute loss, a lighter student scores a higher percentage than a heavier one, and adolescents are still growing - a 15-year-old losing weight is not the same event as an adult losing weight. The leaderboard therefore rewards the wrong thing and can reward it unevenly.

It converts health into status. Hemi now describes the challenge as proof of "discipline" and links it to being a prefect. External ranking has displaced any internal reason to be active, which is fragile once the leaderboard disappears.

It measures nothing that matters in three of the four walls. Nothing on the board records sleep, mood, connection or enjoyment. A design that counts only kilograms will always report success on kilograms.

The whānau wall. In many whānau, kai is manaakitanga - food is how care is expressed. Hemi avoiding whānau meals is a whānau-wall symptom the leaderboard cannot see, and his withdrawal from kapa haka is a wairua one.

Duty of care. A school running public weigh-ins has no way of knowing which students have a history of disordered eating. "Not wanting to shame" is not a safeguarding plan; privacy, screening and a referral pathway are.

Start with what the numbers say. A BMI of about 22 sits inside the healthy range for an adolescent male, so this weight loss was not medically indicated - it is a performance and appearance change, not a health correction. Losing 3.4kg in five weeks is roughly 0.68kg per week, faster than the commonly cited guidance of about 0.5kg per week, and he is still growing.

Then look at the intake. A rough estimate of energy needs for an active 15-year-old male is in the region of 2,200–2,800 kcal a day, depending on activity. Whatever the exact figure, 1,400 kcal is well below it, and he is also training. Under-fuelling during growth is associated with fatigue, poorer concentration, impaired bone development and higher injury risk - all tinana effects that the leaderboard does not record.

Then look at behaviour. Weighing twice each morning, skipping breakfast and lunch on weigh-in days, dropping kapa haka, and avoiding whānau meals are narrowing behaviours. His life is getting smaller in order to protect a number. That is a hinengaro and whānau cost, and it is the pattern clinicians look for, not a sign of success.

Judgement. On the one measure the challenge counts, Hemi is "winning". On hauora as a whole, one wall may have shifted slightly while two have been damaged, and the tinana picture is ambiguous because energy, growth and injury risk are unknown. The design of the challenge has made it impossible to tell the difference between discipline and harm.

What evidence would settle it: sleep hours, mood and irritability, whether he has been injured or unwell, whether he enjoys training, and whether he would keep going if the leaderboard were removed.

Change 1: measure participation and behaviour instead of body weight. Students could log activity sessions, try new activities, record sleep, or earn points as a team. Justification: weight is not a behaviour - it is an outcome influenced by growth, hydration and genetics, and it cannot be publicly ranked fairly. Behaviour measures can be improved by effort, they reward everyone rather than the lightest students, and they can be designed to reflect more than one wall (sleep for tinana, trying something new for hinengaro, bringing a whānau member for whānau).

Change 2: remove the public weigh-in and the leaderboard, and replace them with private, opt-in support. No weigh-in in front of a teacher aide, no first names on a board, a short screening question with a referral pathway to the school nurse or GP, and prizes for consistency, teamwork or contribution. Justification: the school has a duty of care and cannot know which students are vulnerable to disordered eating; making weight public creates the shame mechanism that is the main risk in this case. Opt-in respects students' right to decide whether their body is a competition entry.

A third change worth adding: put kai and whānau into the programme. Sessions about food as manaakitanga, shared meals and cooking rather than restriction would give the whānau wall a role in the challenge instead of making it an obstacle - and it would address the behaviour Hemi's mother has already noticed.

Why these are not just 'softer'. The purpose of a school wellbeing programme is wellbeing, not weight loss. A challenge that produces weight loss at the cost of a student's relationship with food and family has failed on its own terms, however good the leaderboard looks.