We're going through quite a hard time at the moment. DS2 is 3.9 and was diagnosed with ASD at 2.5. He's at a MS preschool and loves it there - he is generally a chilled, very happy little boy who loves his keyworkers and most of the activities they do there. He's recently started doing PECS there and is getting on with it well. He's pre-verbal (has used a few words but almost always to himself, naming things, not to us, though he's beginning to do a little bit of echolalia).
Our current heartache stems from trying to find him an appropriate school (due to start Sept '15). Because nobody has ever articulated how badly affected DS2 is by his autism, or how severe they think his learning difficulties are, we've had a lot of difficulty envisaging him in a school setting. We've visited MS primaries, special schools and an ASD resource base in a primary school, and still none the wiser, really. Nowhere has really jumped out at us as THE place for him. 
Yesterday, I pressed his Eysenit for a bit more input into his potential abilities (we know there's no crystal ball) and she'd just talked to his keyworker at preschool, who'd been working on his profile that day. And I know this shouldn't come as a shock, but his cognitive levels and all the other ways they assess a child's progress at preschool - communication and language, personal social and emotional development - have only progressed very slowly since he was assessed a year and a half ago.
He is basically in very much the same place as he was a year ago. His levels are around 18 months-2 years below his age. We knew this but I don't think it'd been expressed so baldly before. I think my head's been in the sand.
She (eysenit) couldn't really expand on this in terms of how he'll progress at school, but could we interpret this as implying 'Severe Learning Difficulties' rather than moderate? TBH, although we wanted more concrete information, I now feel very downcast and upset that he might be so severely affected.
I'm feeling the stress of trying to find the right place for him, I'm bursting into tears all the time (I seem to be very hormonal at the moment too) and I feel like I can't see the wood for the trees.
We're still leaning slightly towards trying him in a local, small mainstream primary with a very good attitude towards SEN and ASD, the Head there is great and would follow his statement to the letter, aim to employ a TA with experience of ASD, etc. Would like to try that for a year and maybe it'll give us more of a handle on his abilities and where he needs to be.
Can anyone shed any light or experience on this for us, please? I'm in a fairly desperate state and can't stop crying about it all, which is a bit useless really. Any grips gratefully received. 