How much time do your kids have off school for sickness?
My daughter is in Year 7 and despite keeping away from her and constantly washing my hands, she's caught an awful cold off me (it's years since I've had one like this). I was determined she wouldn't be off so much with going to secondary school, but she's clearly not well enough to go in (constant running nose, coughing, white as a sheet) - have to admit I feel a little guilty keeping her off for a cold.
The only thing she said she might learn anything vital from is science, so is going to do a bit of research on that.