the rankings are based on a variety of factors such as standardized test scores of students, salary of recent graduates, survey results of graduates and/or recruiters, the specific schools that choose to participate in a market survey, the number of top companies recruiting at the school and a variety of attributes. the ratings vary significantly by method used to determine the success of each program. for instance, the "forbes" and "financial times" results are based on long-term graduate career progress concerns, the "bloomberg businessweek" and "economist" polls evaluate short-term experiences of the students with their program, "u.s. news & world report" consider the recent experiences of recruiters with the program, and other rankings like the aspen institute "beyond grey pinstripes" measure integration of sustainability material into business programs.