After a bit of googling, I think the answer is "no". Schedule A refers to "non-competitive" hiring process. I'm not positive, but I think this refers to jobs that are created specifically for the purpose of hiring someone with a disability. This job is probably "special" and is not open to the general public. This is going to be a gross oversimplification, but let's say you have a software design firm. A software developer who uses a wheelchair applies. S/he is in the "competitive" pool, because s/he is applying for a "regular" job. S/he will require accommodations to get around the building, but can perform the essential job duties (software programming). This same firm might also create an office staff support position, and design the job duties so that they can be performed by a person with a significant intellectual disability. While software developer positions are open to everyone, this job is open only to people who meet Schedule A criteria. Stuttering qualifies you for ADA, but not for Schedule A, at least not automatically. It should also be noted that although Schedule A specifically lists "psychiatric", it is probably necessary to demonstrate that the psychiatric disability is of a certain severity/degree. The majority of people with psychiatric diagnoses (eg social anxiety disorder, generalized anxiety disorder, depression, etc.) likely do not qualify for Schedule A. Disability law is VERY nuanced, and eligibility is subject to *individual factors* beyond just categorical qualifiers. It is conceivable that a stutter COULD qualify as Schedule A, but I'm not sure how. Even if you were unable to speak at all, to the point that you have to use a technological device for 100% of your communication, that would probably still fall under regular ADA levels.