I had today off from school, and I'm not even sick.
My younger brother is sick, so my parents said that he's not going, and I might as well not go either.
But only because I have no important lessons.
That doesn't happen often and is very unlikely to happen again this year, considering I've got a crap load of exams and lots to learn.
The worst I think I've had to keep me off of school, for being sick, were ear-infections. I've had two cases of ear-infection and they have kept me off from school for a total of 2.5 weeks in total.
And the only other considerable time I've been off from school, was after I had a Tonsilectomy and had 2 weeks off of school, followed by 1 week of Half-Term Holiday. But, I was in Year 3 then, so, I was 8.