That kid should have been taken to the emergency room PDQ. Just handling a rabid animal without protection is reason enough.
Standard protocol for possible exposure to a rabid bat is to start human rabies vaccination immediately!
from the CDC:
A person who is exposed and has never been vaccinated against rabies should get 4 doses of rabies vaccine - one dose right away, and additional doses on the 3rd, 7th, and 14th days. They should also get another shot called Rabies Immune Globulin at the same time as the first dose.
How about not putting a sick bat in a bucket! Control your AO! Being stupid can really hurt.