I can kinda see why there might be some opposition to the dog. Unlike seeing eye dogs glucose sniffers haven't been universally accepted as service animals. Unlike diabetics the blind do not have an equally good alternative. CGM's I bet are more accurate and reliable than Fido, CGM's don't shed hair in the classrooms, fart, drool, bark, bite and pass along fleas . (can you tell I'm a cat person yet?:) Since these are very rare animals I bet the cost is even more than a CGM. My opinion, get a CGM, leave the pooch at home where he can do what comes natural, sniffing the butts of other dogs instead of blood glucose highs and lows.
Cats RULE dogs Drool.
Yes I know CGM's and children aren't always a compatible match.