For DS2 :
YR - 8 school days in a row when hospitalised with asthma, plus 2x 48 hrs for D&V. Oh - also 3 weeks while we were all isolated for swine flu right at the start of the outbreak. Then another 5 days with his asthma again. So a total of 32 days in YR.
Y1 - 10 days with his asthma.
Y2 - 5 days with asthma. Then 2 days after being injured in school. Then another 3 days with asthma. So 7 days.
Y3 - 23 days, 8 through his asthma, then 15 more because the meds made him immune suppressed, and chickenpox was going round, he couldn't go in. Then he caught 3 D&V bugs, so another 6 days. Then another 3 days through his asthma. Then he had to have 4 days off for a viral infection where he was running a temp of 101 for all 4 days. So that year he had 36 days off.
He has just started Y4, and has already been off for ALL of last week, as he has a viral my arse chest infection that has set his asthma off again. He will be immune suppressed due to meds again, and though will be well enough in himself to go back on Monday, if anyone has chickenpox, he will have to wait 3 weeks before going back.
It's awful getting the EWO telling you your DS should be in school when he is in hospital on oxygen...