Maximum possible score: 59
Scores grouped by first digit (poor man's histogram of grade-distribution, with 10-point bins; single-digit scores recorded as two-digit scores beginning with a 0):
55,51,
43,41,41,
39,39,37,36,35,35,30,
28,28,23,22,
19,16,12,12,11,10,10
07,06,05
Scores grouped by letter-grade:
55
A's 51
---------------
B's 43
41
41
39
39
37
36
35
B's 35
---------------
C's 30
28
28
23
22
19
C's 16
---------------
D's 12
12
11
10
D's 10
---------------
E's 7
6
5