Whatever, that is some spurious logic...
"It's not that different really- rewards for attendance, rewards for appointments. They are all supposed to be positives for the receiver."
No, rewards are supposed to identify and promote a particular behaviour. They are not just meant to be 'nice things', they are supposed to be used with purpose, not bandied around in such an ad hoc fashion. Children getting a sticker at the doctors are not given a choice between that and a school disco/award certificate/day out- their parents make that decision for them.
"I have pupils in my class who don't suffer with terrible health problems, but have historically poor attendance, (60% and heading for a fine in one case)"
Was the child in question heading for a fine? Or was it the parent? Can you not see how utterly contradictory it is to recognise attendance as the parent's responsibility on one hand and reward the child for it on the other?
And as for children 'manipulating' their parents into having a day off- using attendance awards in this way to improve parenting is absurd.
We all know that parental income has a massive effect on a child's academic achievement; why not reward the children whose parents earn over £40,000 a year? After all, the children can then hassle their parents into earning more and therefore drive up standards, right? 