I do believe the UALR program is a 2 year program but I dont know much beyond that as far as getting the actual certification, and any possibilities of job placements upon graduation/certification.
But then again alot of Arkansas educators are walking around with basic 4 year degrees and very few carry a Masters. My dad has a 4 year degree plus 15 hours towards a Masters. Alot of the Kindergarten teachers in this area have gotten their certs through a 2 year degree.
So seeing that kind of educational field, I am sure here in this part of the country you probably could get by with a 2 year degree in ASL + certification.
But DC they probably expect much more since that part of the country teachers tend to carry higher educational degrees. Alot of the teachers out there carry a Masters plus 15 hours. So I would expect terps to have a 4 year degree plus certification.
And as with anything - the more education you have in your background, the higher your potential pay can be.