I teach music through parks and rec, and every instructor is required to be certified in CPR w/AED and first aid, and we have one in the gym, in the office, and in the auditorium, as well as a few in cases on the wall with breakable glass that will automatically call for backup.
There have been enough cases in kids' rec sports, etc that this is considered standard now.
And having done AED training, the machine really does tell you what to do, and examines the heart rhythm before shocking. The CPR is a lot easier to get wrong than the AED part.
I'm also trained on Epipen/Auvi-Q (the latter also tells you what to do), Narcan, and Glucagon.
FWIW, as a music teacher I also had training in CPR, First, aid, EpiPen, and glucagon in public schools. At the time, we had to have 10% of teachers trained and every school I worked in chose to have that be the PE teacher, music teacher, art teacher, librarian, etc. The rationale was that we taught all the kids and knew them.