So how much adjustment is reasonable to expect?

[asdx2]

Ds 15 is at a very supportive autism base but I have a feeling we may be on the verge of our first disagreement as to how much adjustment is reasonable.
Ds can talk and will when he chooses although he finds it difficult, unpleasant, distressing.
He rarely speaks about anything other than football statistics and have recently discovered that the best communication he has is through emails.
He can recognise when he is on the verge of a meltdown and alert me to a need for space.
I spoke to the head of the unit on friday and said that I thought that giving Jack the opportunity to communicate through the school's intranet would be a very positive development and he seemed to agree.
However he emailed me fiday afternoon telling me that the TA had said he would no longer be allowed to email during lessons as it wasn't acceptable.
So hoping it's the TA not in the loop but if not how can I make them see that allowing ds to communicate in a way he finds comfortable is a reasonable adjustment?
Any thoughts?

**Should be ds emailed

It does sound like a case of the TA not being in the loop. I would clarify it with the head again and get them to explain their reasons if they are now saying that such communication is not acceptable. It may be that they want to work towards other forms if possible but allowing him to feel comfortable and communicate this way while they set ups strategies to encourage him to find alternatives seems a reasonable adjustment.