When i run my code, i get "Oops, try again. get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected"

I expect to get the green light from codecademy for this lesson, I calculated the average using a real calculator and im recieving the right number, im assuming that when i plug in my results, they are being plugged in with the wrong name? im not sure and so i need some help.

```
lloyd = {
"name": "Lloyd",
"homework": [90.0, 97.0, 75.0, 92.0],
"quizzes": [88.0, 40.0, 94.0],
"tests": [75.0, 90.0]
}
alice = {
"name": "Alice",
"homework": [100.0, 92.0, 98.0, 100.0],
"quizzes": [82.0, 83.0, 91.0],
"tests": [89.0, 97.0]
}
tyler = {
"name": "Tyler",
"homework": [0.0, 87.0, 75.0, 22.0],
"quizzes": [0.0, 75.0, 78.0],
"tests": [100.0, 100.0]
}
# Add your function below!
def average(numbers):
total = sum(numbers)
total = float(total)
total = total / len(numbers)
return total
def get_average(student):
homework = average(student['homework'])
quizzes = average(student['quizzes'])
tests = average(student['tests'])
tsum = (homework * 0.10) + (quizzes * 0.30) + (tests * 0.60)
return tsum
print get_average(lloyd)
print get_average(alice)
print get_average(tyler)
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'
classn = [lloyd, alice, tyler]
def get_class_average(students):
results = []
for stu in classn:
results.append(get_average(stu))
return average(results)
print get_class_average(classn)
```