EB-1B is an employment-based visa for the outstanding professors or researchers who have the international recognition. Unlike self-petitioned EB-1A visa, EB-1B should be filed petition by the employers rather than the beneficiary of the petition.
You must demonstrate international recognition for your outstanding achievements in a particular academic field. You must have at least 3 years experience in teaching or research in that academic area. You must be entering the United States in order to pursue tenure or tenure track teaching or comparable research position at a university or other institution of higher education.
You must include documentation of at least two items listed below and an offer of employment from the prospective U.S. employer.