“The traditional concept of a library is being redefined from a place to access paper records or books to one that also houses the most advanced media, including CD-ROM, the Internet, virtual libraries, and remote access to a wide range of resources.”
I wasn’t aware that CD-ROMs were among the “most advanced media,” or that “remote access” or “virtual libraries” were media. Also, this statement still focuses on the library as a place that houses things, despite the mention of electronic resources, omitting the community, outreach, learning laboratory, and instruction aspects.

“Librarians supervise assistants, who prepare cards, computer records, or other access tools that direct users to resources.”
Are there libraries still using card catalogs? Also, “computer records” is rather vague.

“…employers often prefer graduates of the approximately 56 schools accredited by the American Library Association.”
I would change this to state that employers usually require applicants for professional librarian positions to have a Master degree in Library and Information Sciences from an ALA-accredited school. A PhD, second Masters, or teaching certification is mentioned later, but I would move that up to be closer to the accreditation bit.

In general, I think this description tries to accomodate too many types of librarianship, and in doing so fails to give people interested in a specific area an adequate description of the work. I’ll think about this some more…