The accommodations on your child's IEP or 504 plan refer to accommodations for school administered tests and for the MCAS . Read more about MCAS accommodations here.
In order for your child to receive disability based accommodations on the PSAT, SAT, SAT II subject tests, or AP Exams you must first apply for accommodations with the College Board. Use of accommodations without prior approval will result in the cancellation of test scores. With limited exceptions, once approved for accommodations, students remain approved and do not have to apply again when they apply for another College Board test. Apply Early! Documentation is required and review can take approximately seven weeks. PSATs and AP Exams may be administered during a child's 9th grade year. Find out more information here.
Similarly, the ACT requires prior documentation and approval of testing accommodations. Find out more information here.