Yes, AMA will send your copy to school or library of your choice or cancel your subscription all together, whatever you want. There are some that don't want MA going anyplace where it might be seen by prospective young or older flyers and "contaminate" them. Believe it or not.
Here is such a statement made by one in the RCU AMA forum where getting or opting out of the magazine was discussed at length, "No, I don't want my issues sent to a school, and I don't want it sent to the Boy Scouts, Civil Air Patrol, Hospital, Orphanage (do they still have those?), nor any other location that children of impressionable age would be found." "I don't want them to send my copy to anyone of impressionable age, since I wouldn't want them exposed to this level of crap."
ref:
http://www.rcuniverse.com/forum/fb.asp?m=8531464