I'm currently a second-year nurse, so that would be nursing-school

(I'm 17)
I don't specifically carry a CPR-kit for disasters (for reasons MDiana mentioned) but for EDC (had to perform CPR 2 times so far..)
If you don't know how to perform CPR, You wouldn't really need a CPR-mask
If you've got your first aid or safety merit badge, and you feel OK doing first aid, go right ahead and carry a small kit. The teachers might not let you actually do any though.
Even if you use the kit for just yourself, some bandages,gauze pads, antiseptic-wipes and some Tylenol would be a great addition to any EDC