Have you asked what your duties/responsabilities are as the coordinator? maybe there was someone before you that can help you out. Do you have a nurse at the school? I think that she/he might help you out with the health part of it( if there is not one go to
www.webmd.com, they have very good references , for example, you can do a newsletter about the flu season, ozone alerts, asthma and allegies,head lice, food allergies, vision screenings, ect...) , as for safety, is it the school safety overall ( security cameras, security codes for each family and grade, all doors locked, checking I.D.s for pick-ups, designated drop-off and pick-up areas ) or just the children safety? Hope this helps!