Dear Sir/Madam
I am writing this letter to inform you that my child is a student of (name of school) in (location). As my child is suffering from (health problem that your child has, ex. asthma, sore throats, nausea, etc.), therefore, I am concerned that there is a condition in the school that brought on the problem or is causing the problem to get worse.
My child has informed that she/he has noticed (explain what the child saw, ex. toxic fumes, dust, mold, etc) in the school, which could aggravate his/her problem. I believe the school is not following the enviornmental norms of the (law).
I would appreciate if you look into the matter and see what can be done to remedy it. In case you need any additional information, kindly contact me at my address or call me at (phone number). I shall look forward to your reply about how the problem can be resolved at the earliest possible.
Thank you for your time and help.
Sincerely,