It's always the same story. The parents basically see teachers as tax paid baby sitters, and only bother to take a part in their child's education when confronted with the fact that their kid is failing. At that point instead of saying "what is my child not doing?", or better yet "what can I do?" They say instead "What is the teacher not doing for my child?"
While I don't subscribe to humiliating children, there is obviously a problem with Cassandra not doing her homework. So what is the mother doing? Sitting down with her child and making sure she understands the assignment and completes it? Nope, it's much easier to blame the school. To extend this to when Cassandra is an adult, if she has to complete a project by a deadline or submit a report, do you think she would be fired if she simply did not do it? This is what parents do not see in their children, that they are re-enforcing habits that will hinder their children's success in the work place.