My Aspie son has just completed his first year at Uni. I found there was more help for him at Uni than there had been in College etc.
He claimed Disabled Students Allowance (DSA) which provides payment for a note-taker and someone to sit with him in the lecture hall (where he is most anxious). He also gets from the DSA a laptop, 3-in-one printer/scanner/ photocopier/ dictaphone for recrding lectures plus allownaces for print cartridges and batteries.
He gets 25% extra time in exmans and a room on his own.
As he gets DLA he is also entitled to Local Housing Allownace (formerly Housing Benefit) which pays some of his campus accommodation.
As a disabled student he also gets a Special Support Grant of approx £1200 (although that disqualifies him from any Maintenance Grant)
If your teen is planning to go to Uni start early - the spring before the Sept in which they start there and get the DSA claim in, speak to the Disabled Students Dept at the Uni etc.
Just thought this may help some of those with teens planning to go to Uni.