Hello Emma,
This is the very recent advice given out to Hampshire schools by the Health and Safety Team:

Wheelchairs
In both mainstream and special schools some children may want to help their friends by pushing their wheelchairs. This practice is acceptable providing the risks for both the child in the wheelchair and the children pushing are assessed and deemed to be low. Safety precautions will include:

· limiting the number of children involved
· showing the children how to push safely
· taking account factors on the route – e.g. distance, changes of level, lighting, weather and traffic (pedestrian and vehicular)
· deciding the level of adult support - sometimes staff will need to walk alongside but, in some cases, common sense monitoring will be
sufficient
· deciding when adults need to take over, e.g. on steps
· ensuring wheelchair straps are worn

I would also echo what Caroline has said and maybe the school could devise some kind of certificate that children have to 'earn' to show they have the skills/maturity to do this. School should also maybe get written permission from the parents of the pushers.

sorry incorrect response

Yes, we allow this but only when the LSA is walking beside them.