Aerolink.

Aircraft Owners and Pilots Association, Starting Your Flight Training.  Lots of advice on selecting an instructor or program, information on what flying involves, plus a listing of aviation programs and database of independent instructors.

Council on Aviation Accreditation. Background on the organization and list of accredited collegiate aviation programs.

FAA Education page. Extensive information for different aviation careers as well as a list of flight training and university programs.

FAA International Answerbook. Information for an international audience on U.S. licensure, training, and more.

Student Pilot Network.  Search for a good match among over 900 (primarily noncollegiate) flight schools.  Criteria can include availability of a professional pilot program, visa issuance, and housing availability, among other options.

University Aviation Administration. Links to member schools.