The United Nations Educational, Scientific and Cultural Organization (UNESCO) has established a Portal on Higher Education Institutions that is now available online. The Portal provides access to higher education institutions sanctioned either by government or other competent authorities and general information about higher education, accreditation, quality assurance and related subjects in various countries. At present, the Portal serves as entry point to 12 countries’ institutions and information. This will be expanded over time. May 2008, Source: Council for Higher Education Accreditation (CHEA)
Furthermore, for people who intend to work with the subject limited to understanding of accreditation especially of Engineering Education, following links may be useful (might save you some time 
):
- American Society for Engineering Education (ASEE)
- International Engineering Accords like Washigton (1989), Sydney (2001) and Dublin (2002) Accords at International Engineering Alliance Website
- Carnegie programme and institutional classifications at Carnegie Foundation for the Advancement of Teaching
- Accreditation Board for Engineering and Technology
- Quality Assurance Agency for Higher Education QAA (UK)
- European Association for Quality Assurance in Higher Education (ENQA)
- New England Association of Schools & Colleges, Inc. (NEASC)
- NSF, Division of Engineering Education and Centres (NSF_EEC)
