Complex sentence: Most library schools in North America are accredited by the American Library Association, and offer graduate programs only, the bachelor's degree in Library Science (or Library Economics as it was called in early days) having been phased out several decades ago.
Split into simpler sentences: Most library schools in North America are accredited by the American Library Association, and offer graduate programs only. The bachelor's degree in Library Science (or Library Economics as it was called in early days) was phased out several decades ago.