Had the annual review this week. It was lovely. His old teacher has a very good understanding of him- what makes him tick (and what doesn't).
ONe thing that really pleased me (and remember I am used to him being the most unmanageable of an SLD class) was that he is using PECS at a higher conceptual level than any other child he has taught (this was the nursery class). He refuses to exchange for toys and other common reinforcers (not interested enough),although will happily exchange for food, but is using it to ask for things like "help", and "different" (if he wants something and has no symbol he requests "I want different")- hence the high conceptual level.