Student becomes the teacher 8/9

I am getting an incorrect class average of 83.87 instead of 91.15. Can anyone point out where the mistake is in my code?

```
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 = float(sum(numbers))
return total / len(numbers)
def get_average(student):
homework = float(average(student['homework']))
quizzes = float(average(student['quizzes']))
tests = float(average(student['tests']))
return homework * 0.1 + quizzes * 0.3 + tests * 0.6
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'
def get_class_average(class_list):
results = []
for student in students:
results.append(get_average(student))
print results
return average(results)
students = [lloyd, alice, tyler]
print get_class_average(students)
```