The children with 100% attendance do cross a broad spectrum : some of the least able, lots of ASD children, some of the naughties (who actually like school!) plus many average and able students. I have rarely know these children to boast loudly about their attendance!
I agree that the chronically ill fall into a different category and schools do a great deal to support these children. However, unless you work in schools , you probably wouldn't realise exactly how many 'off at the drop of a hat' types there are. My year 10 class has not been a full house since September and - one very ill child aside - it is never the same people in the room. Quite how the parents expect teachers to keep on top of this, I am not sure.
These type of attenders are often the first to say ' well, I wasn't here' about homework, learning and so on.
I do still strongly feel that in a world where there are some children who are rarely rewarded , the 100% attendance reaches some children who are otherwise overlooked : and this is precisely because it is a feat of fortitude! This isn't about good health being 'good luck' : some people are very unfortunate. But many take whole days off for unnecessary reasons, honest. It is pretty common , for example, for some kids to take a whole days off after a 10 minute dental appointment!
And , I can tell you, the problem is worse in the sixth form!
I am now down to one child in my year 10 class on 100 %! I think the issue is attitudes to attendance develop in year R and remain throughout school : so the odd day off may not have seemed a big deal when DCs were 5 or 6 but have huge consequences at 15 or 16. I think we would all agree that those children who sadly suffer from very poor health are not going to perform academically as well as they 'should ' have. There are students I teach who always take off five days for a sniffle or are off a day every week : I often wonder how they will ever hold down a job. Often, I have come across generations of families with poor attendance.
None of the above may alter people's attitudes to reqarding full attendance : but if it is low key (as it usually is : so a letter home or a praise postcard) I don't see the issue. I can totally see why people think a big fuss shouldn't be made but I would say that about most awards and rewards which teenagers, especially, find a bit embarrassing.