Hate these awards - ours does a bronze certificate for 100% in 1st term, silver for 2 terms and gold plus a book token for 3 terms. It's not cumulative across years though, so if you're there summer term, winter term and spring you're still only on silver. Nothing if you don't get 100%.
100% means being at registration morning and afternoon. If you have an appointment at 8.45 and arrive at 9 (after registration), you've technically missed all morning. If you have an appointment at 9.15 and spend the rest of the morning bumming around town but made it into registration then you're marked as present. I think this shows they're not really interested whether you're in school and learning for the maximum amount of time - just whether you're in for the ofsted statistics.
Recently DD missed a certificate because she was out for the morning at an exam. I had to point out to her the fact that she actually did get a certificate that she'd earned by working hard at something, rather than one that you just get because you haven't been off ill.
I asked for some more time off for the next exam and the receptionist said that if I took her slightly later in the afternoon then she'd have her attendance mark. She wasn't pleased when I said that was pointless because she'd already lost her 100% with the previous exam (I did pick her up after registration though).
If the aim is to encourage you to go in even if you're not feeling great then I'm not sure how motivating it is to show up through the year if you know you're not going to get anything because of the day you were ill in September.
You can improve at something, learn a new skill, be helpful, be kind, meet your targets in addition to the ones who are academic or sporty, but it's not like you can "try harder" at not being ill and if the only certificate you've "earned" is the attendance one then perhaps it's showing that despite turning up every day you haven't improved at anything so it's not doing you any good.
Apparently, we should focus on the ones who can "achieve" this, rather than the ones who can't 