You have a right to keep him in MS, unless you specifically request otherwise, unless his presence would be incompatible with the "efficient" education of others. There's a dearth of SS places in most LAs (and ours has no unit places at all) and they're not in the habit of offering them on a plate.
While I understand the school wanting to play up the SEBD side if his problems in order to help ensure a statement, they're not doing him any favours by being so dishonest.
And seconding the intelligence thing being BS. DS1 is probably the brightest kid in his school. Because he does have a statement, they are required to deal with all his special educational needs, giftedness included.
That said, we're up for annual review and wanting a change of placement. I've been warned that SEN panels locally will see that he's making progress, academically. The fact is that i could keep him off school and not formally teach him and he would make progress because he's a bright, inquisitive boy. So I am emphasising SEBD, which he does have in spades, at the moment.
As far as your report goes, just write it down (preferably typed!), read it, edit it.