Not sure why this isn't being accepted

# The dictionary will look something like:
dict1 = {'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'], 'Kenneth Love': ['Python Basics', 'Python Collections']}

# Each key will be a Teacher and the value will be a list of courses.
#
# Your code goes below here.

def num_teachers(dict1):
    return len(dict1)

def num_courses(dict1):
    count = 0
    for item in dict1.values():
        for value in item:
            count += 1
    return count

def courses(dict1):
    list1 = []
    for item in dict1.values():
        for value in item:
            list1.append(value)
    return list1

def most_courses(dict1):
    count = 0
    teacher = ""
    for key, value in dict1.items():
        if len(value) > count:
            count = len(value)
            teacher = key
    return teacher

def stats(dict1):
    list1 = []
    count = 0
    for key, value in dict1.items():
        count = len(value)
        list1.append([key, count])
    return list1