It is a tiny school, with an enrollment the size of a modest elementary school. There is no campus, just a small office building. Its 400 part-time students are invisible here - attending classes at off-site facilities. Yet the National Graduate School of Quality Management awarded its president, Robert J. Gee, $732,891 in compensation two years ago. The president of Tufts University, with 10,800 employees and 5,500 students, had compensation the same year of just $738,596.