ASLU has been offering online sign language resources since 1997. The program began as an effort to support parents of Deaf children living in rural or "outlying" areas without access to sign language classes. (See:www.lifeprint.com) The resources at Lifeprint.com were organized into a curriculum and grew to be quite popular with ASL students, teachers, and interpreters as well as parents of Deaf children.
The courses here at the ASL Training Center are self-study and provide a "course completion certificate" which indicates the participant has successfully completed the course. Note: The certificate is auto-generated upon successfully completing the course assignments and quizzes. The certificate does not include a human signature nor letter grade. If you need a signature and letter grade -- that will require a more in-depth course including verification of your signing ability, proctored testing, and qualified review of a submitted video -- all of which takes considerable time and thus costs more ($483.00) see: http://lifeprint.com/asl101/index.htm for more information.
If you are looking for a self-study course for home-school or personal enrichment then the courses here at the ASL Testing Center (asl.tc) will meet your needs in an economical way. Tip: Some parents or home-school teachers simply compute their own grade for their student by using the ASL.tc quiz percentages (100-95%=A, 90 = A-, 87=B+, 84=B, 80=B-, 77=C+, 74=C, 70=C-, 67=D+, 64=D, 60=D-, 59=F) thus saving quite a bit of money.