I agree it's not fair.
Kids get the odd bug - it's normal, from mingling and making friends to playing in the mud, there are germs, they will affect them.
And the kids who has long term illnesses too - do they choose to? for example, does a child with epilepsy choose to have a fit and have to miss a day?
Or even, God forbid, does a child choose to be involved in an accident, lose a close relative etc? Causing an absence?
100% isn't fair - it's encouraging germs into schools, and those with immune issues can't be around that, as it could be very serious for some to encounter certain viruses.
95% as an 'excellent' would be better in my eyes.
Particularly fitting thread today - DH has just come home from work with a letter - the annual pay rise offer - 2% plus CASH BONUSES if they do not take days off ... never mind the having to look after sick children, emergencies, genuine sick bugs etc. Oh and btw, this is a food storage/transportation environment he works in...Responsible...