There were 10 homework assignments. All were required. Assignments that were late without an excuse were penalized 10%. Assignments that were very late were penalized 20-30%, depending on how late. The points per assignment were:

assignment	1	2	3	4	5	6	7	8	9	10	in-class	total
points	20	40	30	30	50	30	45	15	25	15	20	320

The grading scale is:
A > 90%
B > 80% and <= 90%
C > 70% and <= 80%
D > 60% and <= 70%

Each letter grade is divided into 3 equal inverals, with the top and bottom being + and -, respectively.

Course grade distribution for Spring 2009

A+  X
A   XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
A-  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
B+  XXXXXXXXXXXXXXX
B   XXX
B-  XX
C+  X
C   
C-  
D+  
D   
D-