FIG 2 Grade distributions for major assignments and overall course scores. Each section is plotted separately by university and is denoted below the university designation. Grades according to an A, B, C, D, F scale are colored according to the key. The number of students by section were as follows: 1,  n  = 23; 2,  n  = 23; 45,  n  = 28; 46,  n  = 26; 47,  n  = 23; 48,  n  = 24; 13190,  n  = 10; 13192,  n  = 8; 13193,  n  = 11; 13195,  n  = 11.