Brussels Osteopath
Interactive Guide
School Bag
Check
Five things to check before the school year — and what actually matters.
Checks
5
5 minutes, once a term
Weight Guide
10–15%
Of your child's body weight
Straps
Always Both
One shoulder loads one side
1. Weigh It, Once
Targets
Total load carried, often daily for ten months.
How to Do It
- Put the packed bag on the bathroom scales on a normal school day.
- Weigh your child.
- Commonly used guidance is to keep the bag under roughly 10–15% of body weight — a rule of thumb rather than a hard threshold.
- If it's well over, the fix is usually what's inside, not the bag.
Duration
Once a term
2. Both Straps, Tightened
Targets
Even loading across both shoulders and the mid-back.
How to Do It
- Both straps, every day — one shoulder loads one side of the spine and the neck.
- Tighten so the bag sits against the back, not swinging below the bottom.
- The bottom of the bag should sit around the waist, not on the buttocks.
- Use the chest or waist strap if it has one.
Duration
Check monthly — kids loosen them
3. Pack Heavy Things Closest to the Back
Targets
Leverage — the same load feels heavier further from the body.
How to Do It
- Heaviest books flat against the back panel.
- Light, bulky things at the front.
- Fill the space so nothing slides around in transit.
Duration
Show them once, then spot-check
4. Empty It Weekly
Targets
The load nobody audits.
How to Do It
- Fridays: tip it out completely.
- Take out anything that lives at school or at home.
- Water bottles are heavy — a refillable one filled at school beats carrying it from home.
- Ask whether every book actually needs to travel both ways.
Duration
2 minutes, every Friday
5. Watch How They Carry It, Not Just What
Targets
Habits that outlast any single bag.
How to Do It
- Watch them walk away with it on. Are they leaning forward or to one side?
- Do they put it down between classes, or wear it all day?
- Sports kit on the same day as a full timetable is the heaviest day of the week — plan for it.
- A bag on wheels is a reasonable option for a long walk or a heavy year.
Duration
Observe once a term
When to Get It Looked At
Back pain in children is usually benign and mechanical, but it is worth taking more seriously than in adults. See a GP for pain that wakes them at night, doesn't improve with rest, comes with fever or weight loss, follows a fall, or is associated with any leg weakness, numbness or a limp.
Explore More
Worried about your child's posture or back pain? Assessment is gentle, and reassurance is often the outcome.
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