Part of the whole

Oops, try again. get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected

Hey guys, I can't seem to figure out why the alice average is off. Any help would be greatly appreciated, thanks!

```
def get_letter_grade(score):
if score>=90:
return 'A'
elif score>=80:
return 'B'
elif score>=70:
return 'C'
elif score>=60:
return 'D'
else:
return 'F'
print get_letter_grade(get_average(lloyd))
def get_class_average(students):
students = [lloyd, alice, tyler]
results = []
for student in students:
results.append(get_average(student))
return average(results)
```