What is going on?

# The dictionary will be something like:
# {'Jason Seifer': ['Ruby Foundations', 'Ruby on Rails Forms', 'Technology Foundations'],
#  'Kenneth Love': ['Python Basics', 'Python Collections']}
#
# Often, it's a good idea to hold onto a max_count variable.
# Update it when you find a teacher with more classes than
# the current count. Better hold onto the teacher name somewhere
# too!
#
# Your code goes below here.
def most_classes(dict_of_teachers):
  max_count = 0
  max_teacher = ""
  for key in dict_of_teachers:
    if len(dict_of_teachers[key]) > max_count:
      max_count = len(dict_of_teachers[key])
      max_teacher = key
    else:
      continue
  return max_teacher

def num_teachers(dict_of_teachers):
  return len(dict_of_teachers)

def stats(dict_of_teachers):
  list_of_list = []

  for key in dict_of_teachers:
    list_of_list.append([key, len(dict_of_teachers[key])])
  return list_of_list

def courses(dict_of_teachers):
  list_of_courses = []

  for value in dict_of_teachers.values():
    if value not in list_of_courses:
      list_of_courses.append(value)
    else:
      continue
  return list_of_courses