If you have a child with a learning disability, psychological disorder or physical disability, they WILL need extra time and special accommodations on the SAT or ACT.
Because these tests are purely testing how good you are at taking the SAT or ACT, they are absolutely going to be difficult for students with learning disabilities. They have nothing to do with how smart you are, and everything to do with how good you are at taking tests.
They will most definitely be harder for students with learning disabilities (which is part of why they have such a bad reputation).
Two things to know about this:
Colleges will NOT know that your student had any special accommodations.
There is no stigma against, or anything wrong with special accommodations.
It is not cheating or getting an unfair advantage. To be clear, if your child suffers from any disability listed above, it would be unfair for them to NOT get the accommodations!