Explain challenge

# 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(test):
  max_count = 0
  busy_teacher = ''

  for teacher1,teacher2 in test.items():
    if len(teacher2) > max_count:
      max_count = len(teacher2)
      busy_teacher = teacher1
  return busy_teacher

def num_teachers(test2):
  teach_count = 0

  for teacher1,teacher2 in test2.items():
    if len(teacher1) > teach_count:
      teach_count = len(teacher1)
  return teach_count


def num_teachers(the_teacher_dict):
  counter = 0
  for teacher in the_teacher_dict:
    counter += 1
  return counter