Namaste!
I teach kids with special needs and a few years back I was not aware of all this hoopla about getting permission, best intention and all that (for the records, I really don't worry about it too much one way or the other- just try my best every day) Anyway, at that time, I had a very tough class of kids with multiple intense needs including autism. Just to get through the day, I would send reiki to the whole group and I saw a major difference between the days I sent reiki to the days I had not sent. It was interesting :)
Mal