Do you think he will need an extended time accommodation for the SAT/ACT? If so, he should keep the 504 and *use* the extended time accommodation. They ask if the student actually uses the accommodations they are allowed. If not, my understanding is that accommodations will be denied.
The SAT/ACT are different than most classroom tests. The reading demand is heavier and they are more tightly timed. My son is dyslexic, and if he is well prepared for a classroom test, he can generally finish in the time allotted, but he really needed that extra time for the ACT.
Here is something that was recently posted at the Dyslexic Advantage site about this:
http://blog.dyslexicadvantage.org/2...ions-for-college-exams-psat-sat-and-act/
