Persons with learning or emotional disorders or other health-related conditions may qualify for testing accommodations such as extended time on examinations among other options.  Knowing the requirements for granting such accommodations is important and so is making certain that the examiner chosen has the right experience. 

Here are links to common examinations and information about how to register as a test taker with disabilities

The College Board (PSAT, SAT)  

Law School Admission Test (LSAT) 

Graduate Record Examination (GRE) 

Graduate Management Admission Test (GMAT) 

Medical College Admission Test (MCAT)