Several Mistakes:
Raw_input is for strings, not integers so just use input. (not sure might be mixed up with java, still try just input)
Try using:
number = input("what did you get on the test?")
if number >= 90:
print 'A'
elif number <= 89 and number >= 80:
print 'B'
elif number <= 79 and number >= 70:
print 'C'
elif number <= 69 and number >= 60:
print 'D'
else number <= 59:
print 'F'
Hopefully that works (I moved on from python to java and its kinda confusing to differentiate between them.)
You're problem was that you're Boolean statement was checking if the variable is equal to whatever you said it was so
youwould never get any results.
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EOServ Class: Main Player, Mapping Artist, Oldbie