i vaguely remember a thread you posted about missing school but i dont remember the answer.
are you sure your school with throw a big fit? i am asking because we just got a letter in teh mail with dd's over the limit sick days and tardies. i went to talk to the principal and even before i could explain she asked me to ignore the letter saying she has to send it due to district policy. the school does not care (i vaguely remember your school cares) and she was open to helping in any way possible.
have you looked online for probiotics. its so huge that i cant imagine you not finding anything.
here's my story. dd started dc at 2. from 2 to almost 5 she was sick, sick, sick every single winter. from october to march she had a constant runny nose. she never really fell sick sick except the flu one year but she had a constant nagging cold cough the whole winter.
once she started K she never fell sick again. maybe a cold twice. maybe fever from too much activity. yes allergy stuff. but no colds. that is so weird. two colds started - very minor and boom they were gone.